Patella DislocationNCT05533671
Conservative Versus Operative - First Time Patella Dislocations
A study testing medial patellofemoral reconstruction and Non-operative group in people with Patella Dislocation, run by Columbia University.
Trial summary
There is no consensus regarding whether rehabilitation or surgical management is best for the management of a primary patellar dislocation. Consequently this prospective randomized controlled aims to compare the incidence of recurrent knee dislocations and patient reported outcomes of patients with primary patellar… Read more about this study
- Who is it for?
- Ages 12 years and olderHealthy volunteers can take part
- Conditions the study is for
- Patella Dislocation
- What is being tested?
- medial patellofemoral reconstruction and Non-operative group
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 0 participants
- Where
- No sites listed yet
- Study dates
- Sep 2026to Sep 2032
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 12 years and older
- All sexes
- Healthy volunteers accepted
- Child, Adult, Older adult
Who may be able to join
- age 12 and older
- patients seen by the Columbia University Shoulder Elbow and Sports Medicine Service
- patients who experience a first-time patella dislocation
Who cannot join
- coexistent ligament injury or osteochondral fracture necessitating acute surgical intervention
- previous knee surgery
- knee instability prior to injury
- inability or unwillingness to adhere to study participate
- lost to follow up
About this study
Official title: Conservative Versus Surgical Management of First Time Patella Dislocations
There is no consensus regarding whether rehabilitation or surgical management is best for the management of a primary patellar dislocation. Consequently this prospective randomized controlled aims to compare the incidence of recurrent knee dislocations and patient reported outcomes of patients with primary patellar dislocations managed with surgery (medial patellofemoral ligament reconstruction) compared to non-operative management (a standardized rehabilitation protocol, control group).
Read the detailed description
Long term sequalae of first-time patellar dislocations include recurrent knee instability, osteoarthritis, and a decreased quality of life, and yet there is no consensus on the best management for these patients. Despite an increasing trend toward investigating operative vs non-operative management of primary patellar dislocations, scarce level-1 evidence exists comparing the two treatment modalities. Indeed, the few meta-analyses suggesting improved outcomes of operative treatment for first time patellar dislocations mainly utilize retrospective cohort studies. A randomized-controlled trial of 39 patients with primary patellar dislocations with a mean age of 24 (21 operative vs 18 non-operative), found decreased rates of recurrent knee instability after a mean follow up of 44 months (0% in operative vs 35% in non-operative), and a higher Kujala knee score (88.9 in operative vs 70.8 in non-operative; p=0.001). A controlled but non-randomized prospective controlled trial among 69 patients with a mean age of 18, (30 operative vs 39 non-operative), found lower rates of recurrent knee instability after a mean follow up of 24 months (0% in operative vs 20.5% in non-operative and a higher Kujala knee score (86.3 in operative group vs 80.03 in non-operative; p <0.05).The scarce randomized, prospective data investigating the appropriate management in primary patellar dislocations underscores the importance of the current study in providing high-quality evidence to the debate of how to best manage primary patellar dislocations. This study aims to compare the incidence of recurrent knee dislocations and patient reported outcomes of patients with primary patellar dislocations managed with surgery (medial patellofemoral ligament reconstruction) compared to non-operative management (a standardized rehabilitation protocol, control group).
- Conditions
- Patella Dislocation
- Being tested
- medial patellofemoral reconstruction, Non-operative group
- Medical subject headings
- Patellar Dislocation
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
medial patellofemoral reconstructionProcedure or surgery
Surgery to correct dislocated (knocked out of place) knee cap. This surgery anchors the kneecap back into the correct position and supports the kneecap.
Non-operative groupProcedure or surgery
Physical therapy by following a specific regimen.
| Study group | Role | What they receive |
|---|---|---|
| Operative Group | Experimental | This group will have surgical procedure called a medial patellofemoral reconstruction where the kneecap is anchored back into its correct position) Receives: Procedure: medial patellofemoral reconstruction |
| Non-operative group | Active comparator | This group will have physical therapy for their knee dislocation by following a specific rehabilitation plan. Receives: Procedure: Non-operative group |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in Kujala Questionnaire Score at 2 weeks
The Kujala questionnaire assess symptoms and limitations that a patient may experience as a result of a knee injury. Scores range from 0-100 with a higher score indicating less limitation. Scores will be reported at each time point.
Measured: Baseline and 2 weeks
Change in Kujala Questionnaire Score at 6 weeks
The Kujala questionnaire assess symptoms and limitations that a patient may experience as a result of a knee injury. Scores range from 0-100 with a higher score indicating less limitation. Scores will be reported at each time point.
Measured: Baseline and 6 weeks
Change in Kujala Questionnaire Score at 3 months
The Kujala questionnaire assess symptoms and limitations that a patient may experience as a result of a knee injury. Scores range from 0-100 with a higher score indicating less limitation. Scores will be reported at each time point.
Measured: Baseline and 3 months
Change in Kujala Questionnaire Score at 6 months
The Kujala questionnaire assess symptoms and limitations that a patient may experience as a result of a knee injury. Scores range from 0-100 with a higher score indicating less limitation. Scores will be reported at each time point.
Measured: Baseline and 6 months
Change in Kujala Questionnaire Score at 1 year
The Kujala questionnaire assess symptoms and limitations that a patient may experience as a result of a knee injury. Scores range from 0-100 with a higher score indicating less limitation. Scores will be reported at each time point.
Measured: Baseline and 1 year
Change in Kujala Questionnaire Score at 2 years
The Kujala questionnaire assess symptoms and limitations that a patient may experience as a result of a knee injury. Scores range from 0-100 with a higher score indicating less limitation. Scores will be reported at each time point.
Measured: Baseline and 2 years
Change in Kujala Questionnaire Score at 5 years
The Kujala questionnaire assess symptoms and limitations that a patient may experience as a result of a knee injury. Scores range from 0-100 with a higher score indicating less limitation. Scores will be reported at each time point.
Measured: Baseline and 5 years
Change in Kujala Questionnaire Score at 10 years
The Kujala questionnaire assess symptoms and limitations that a patient may experience as a result of a knee injury. Scores range from 0-100 with a higher score indicating less limitation. Scores will be reported at each time point.
Measured: Baseline and 10 years
Time to first re-dislocation
Time to first re-dislocation following intervention, measured in weeks
Measured: Up to 10 years
Secondary outcomes (42)
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) at 2 weeks
A computerized survey that asks a series of questions pertaining to a patient's physical function through a grading scale of activities of daily living. The Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10. A higher score is indicative of a greater level of physical function.
Measured: Baseline and 2 weeks
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) at 6 weeks
A computerized survey that asks a series of questions pertaining to a patient's physical function through a grading scale of activities of daily living. The Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10. A higher score is indicative of a greater level of physical function.
Measured: Baseline and 6 weeks
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) at 3 months
A computerized survey that asks a series of questions pertaining to a patient's physical function through a grading scale of activities of daily living. The Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10. A higher score is indicative of a greater level of physical function.
Measured: Baseline and 3 months
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) at 6 months
A computerized survey that asks a series of questions pertaining to a patient's physical function through a grading scale of activities of daily living. The Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10. A higher score is indicative of a greater level of physical function.
Measured: Baseline and 6 months
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) at 1 year
A computerized survey that asks a series of questions pertaining to a patient's physical function through a grading scale of activities of daily living. The Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10. A higher score is indicative of a greater level of physical function.
Measured: Baseline and 1 Year
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) at 2 years
A computerized survey that asks a series of questions pertaining to a patient's physical function through a grading scale of activities of daily living. The Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10. A higher score is indicative of a greater level of physical function.
Measured: Baseline and 2 Years
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) at 5 years
A computerized survey that asks a series of questions pertaining to a patient's physical function through a grading scale of activities of daily living. The Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10. A higher score is indicative of a greater level of physical function.
Measured: Baseline and 5 Years
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) at 10 years
A computerized survey that asks a series of questions pertaining to a patient's physical function through a grading scale of activities of daily living. The Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10. A higher score is indicative of a greater level of physical function.
Measured: Baseline and 10 Years
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) at 2 weeks
A computerized survey that asks a series of questions pertaining to distress a patient may experience as a result of their injury, which can be followed over time to determine the effectiveness of an intervention. The Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10. A higher score is indicative of a greater level of depression.
Measured: Baseline and 2 weeks
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) at 6 weeks
A computerized survey that asks a series of questions pertaining to distress a patient may experience as a result of their injury, which can be followed over time to determine the effectiveness of an intervention. The Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10. A higher score is indicative of a greater level of depression.
Measured: Baseline and 6 weeks
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) at 3 Months
A computerized survey that asks a series of questions pertaining to distress a patient may experience as a result of their injury, which can be followed over time to determine the effectiveness of an intervention. The Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10. A higher score is indicative of a greater level of depression.
Measured: Baseline and 3 Months
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) at 6 Months
A computerized survey that asks a series of questions pertaining to distress a patient may experience as a result of their injury, which can be followed over time to determine the effectiveness of an intervention. The Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10. A higher score is indicative of a greater level of depression.
Measured: Baseline and 6 Months
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) at 1 Year
A computerized survey that asks a series of questions pertaining to distress a patient may experience as a result of their injury, which can be followed over time to determine the effectiveness of an intervention. The Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10. A higher score is indicative of a greater level of depression.
Measured: Baseline and 1 Year
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) at 2 Years
A computerized survey that asks a series of questions pertaining to distress a patient may experience as a result of their injury, which can be followed over time to determine the effectiveness of an intervention. The Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10. A higher score is indicative of a greater level of depression.
Measured: Baseline and 2 Years
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) at 5 Years
A computerized survey that asks a series of questions pertaining to distress a patient may experience as a result of their injury, which can be followed over time to determine the effectiveness of an intervention. The Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10. A higher score is indicative of a greater level of depression.
Measured: Baseline and 5 Years
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) at 10 Years
A computerized survey that asks a series of questions pertaining to distress a patient may experience as a result of their injury, which can be followed over time to determine the effectiveness of an intervention. The Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10. A higher score is indicative of a greater level of depression.
Measured: Baseline and 10 Years
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) at 2 weeks
A computerized survey that asks a series of questions pertaining to pain a patient may experience from an injury and the way it influences different domains of their life, which can be followed over time to determine the effectiveness of an intervention. The Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10.
Measured: Baseline and 2 weeks
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) at 6 weeks
A computerized survey that asks a series of questions pertaining to pain a patient may experience from an injury and the way it influences different domains of their life, which can be followed over time to determine the effectiveness of an intervention. The Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10.
Measured: Baseline and 6 weeks
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) at 3 months
A computerized survey that asks a series of questions pertaining to pain a patient may experience from an injury and the way it influences different domains of their life, which can be followed over time to determine the effectiveness of an intervention. The Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10.
Measured: Baseline and 3 months
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) at 6 months
A computerized survey that asks a series of questions pertaining to pain a patient may experience from an injury and the way it influences different domains of their life, which can be followed over time to determine the effectiveness of an intervention. The Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10.
Measured: Baseline and 6 months
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) at 1 year
A computerized survey that asks a series of questions pertaining to pain a patient may experience from an injury and the way it influences different domains of their life, which can be followed over time to determine the effectiveness of an intervention. The Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10.
Measured: Baseline and 1 year
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) at 2 years
A computerized survey that asks a series of questions pertaining to pain a patient may experience from an injury and the way it influences different domains of their life, which can be followed over time to determine the effectiveness of an intervention. The Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10.
Measured: Baseline and 2 years
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) at 5 years
A computerized survey that asks a series of questions pertaining to pain a patient may experience from an injury and the way it influences different domains of their life, which can be followed over time to determine the effectiveness of an intervention. The Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10.
Measured: Baseline and 5 years
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) at 10 years
A computerized survey that asks a series of questions pertaining to pain a patient may experience from an injury and the way it influences different domains of their life, which can be followed over time to determine the effectiveness of an intervention. The Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) is reported as a T-score with a mean of 50 and a standard deviation of 10.
Measured: Baseline and 10 years
Percentage of participants who re-dislocate their knee after treatment at each time point within each group
Percentage of group that experienced re-dislocation after treatment starts at each time point
Measured: 2 weeks 6 weeks, 3 months, 6 months, 1 year, 2 years, 5 years and 10 years
Time to return to full activity or sports for each group
Time from treatment initiation to full return to pre-injury activity levels in each group, measured in weeks
Measured: Up to 10 years
Change in the Banff Patella Instability Instrument at 2 weeks
Quality of life survey developed in patients with patellofemoral instability that asks patients questions regarding how their patellofemoral injury has affected their life. it is on a scale of 0-100 with higher scores indicating better outcomes.
Measured: Baseline and 2 weeks
Change in the Banff Patella Instability Instrument at 6 weeks
Quality of life survey developed in patients with patellofemoral instability that asks patients questions regarding how their patellofemoral injury has affected their life. it is on a scale of 0-100 with higher scores indicating better outcomes.
Measured: Baseline and 6 weeks
Change in the Banff Patella Instability Instrument at 3 months
Quality of life survey developed in patients with patellofemoral instability that asks patients questions regarding how their patellofemoral injury has affected their life. it is on a scale of 0-100 with higher scores indicating better outcomes.
Measured: Baseline and 3 months
Change in the Banff Patella Instability Instrument at 6 months
Quality of life survey developed in patients with patellofemoral instability that asks patients questions regarding how their patellofemoral injury has affected their life. it is on a scale of 0-100 with higher scores indicating better outcomes.
Measured: Baseline and 6 months
Change in the Banff Patella Instability Instrument at 1 year
Quality of life survey developed in patients with patellofemoral instability that asks patients questions regarding how their patellofemoral injury has affected their life. it is on a scale of 0-100 with higher scores indicating better outcomes.
Measured: Baseline and 1 year
Change in the Banff Patella Instability Instrument at 2 years
Quality of life survey developed in patients with patellofemoral instability that asks patients questions regarding how their patellofemoral injury has affected their life. it is on a scale of 0-100 with higher scores indicating better outcomes.
Measured: Baseline and 2 years
Change in the Banff Patella Instability Instrument at 5 years
Quality of life survey developed in patients with patellofemoral instability that asks patients questions regarding how their patellofemoral injury has affected their life. it is on a scale of 0-100 with higher scores indicating better outcomes.
Measured: Baseline and 5 years
Change in the Banff Patella Instability Instrument at 10 years
Quality of life survey developed in patients with patellofemoral instability that asks patients questions regarding how their patellofemoral injury has affected their life. it is on a scale of 0-100 with higher scores indicating better outcomes.
Measured: Baseline and 10 years
Change in Norwich Patellar Instability Score at 2 weeks
Symptom survey that asks patients questions pertaining to symptoms they may be experiencing as a result of their knee injury. Scored as a percentage, a higher percentage indicates worse symptoms and therefore a worse outcome.
Measured: Baseline and 2 weeks
Change in Norwich Patellar Instability Score at 6 weeks
Symptom survey that asks patients questions pertaining to symptoms they may be experiencing as a result of their knee injury. Scored as a percentage, a higher percentage indicates worse symptoms and therefore a worse outcome.
Measured: Baseline and 6 weeks
Change in Norwich Patellar Instability Score at 3 months
Symptom survey that asks patients questions pertaining to symptoms they may be experiencing as a result of their knee injury. Scored as a percentage, a higher percentage indicates worse symptoms and therefore a worse outcome.
Measured: Baseline and 3 months
Change in Norwich Patellar Instability Score at 6 months
Symptom survey that asks patients questions pertaining to symptoms they may be experiencing as a result of their knee injury. Scored as a percentage, a higher percentage indicates worse symptoms and therefore a worse outcome.
Measured: Baseline and 6 months
Change in Norwich Patellar Instability Score at 1 year
Symptom survey that asks patients questions pertaining to symptoms they may be experiencing as a result of their knee injury. Scored as a percentage, a higher percentage indicates worse symptoms and therefore a worse outcome.
Measured: Baseline and 1 year
Change in Norwich Patellar Instability Score at 2 years
Symptom survey that asks patients questions pertaining to symptoms they may be experiencing as a result of their knee injury. Scored as a percentage, a higher percentage indicates worse symptoms and therefore a worse outcome.
Measured: Baseline and 2 years
Change in Norwich Patellar Instability Score at 5 years
Symptom survey that asks patients questions pertaining to symptoms they may be experiencing as a result of their knee injury. Scored as a percentage, a higher percentage indicates worse symptoms and therefore a worse outcome.
Measured: Baseline and 5 years
Change in Norwich Patellar Instability Score at 10 years
Symptom survey that asks patients questions pertaining to symptoms they may be experiencing as a result of their knee injury. Scored as a percentage, a higher percentage indicates worse symptoms and therefore a worse outcome.
Measured: Baseline and 10 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 Sep 2022
- Study startSep 2026 (estimated)
- Primary completionSep 2032 (estimated)
- Study completionSep 2032 (estimated)
Why it stopped: PI left institution
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (5)Papers the sponsor has linked to this study.
- Other trials for Patella DislocationStudies of the same condition, open and under way.
- More trials run by Columbia UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- This study will be a prospective randomized controlled trial investigating outcomes (recurrent dislocation rates and participant reported outcomes) in two groups of participants following a primary patella dislocation. Half of the participants will be randomized to operative intervention with a standard medial patellofemoral ligament (MPFL) reconstruction and the other half will be randomized to conservative management with a standardized rehabilitation protocol (non-operative group).
- Masking
- None (open label)
- Enrolment
- 0 participants (actual)
Sponsor and investigators
- Lead sponsor
- Columbia University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- David Trofa, MD, Principal investigator, Associate Professor of Orthopaedic Surgery
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05533671
- Sponsor's protocol ID
- AAAU0964
- Status last verified
- Sep 2026
- First submitted
- 4 Sep 2022
- Last updated
- 21 Sep 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Zheng X, Hu Y, Xie P, Cui M, Ma X, Feng YE, Gu J, Gao S. Surgical medial patellofemoral ligament reconstruction versus non-surgical treatment of acute primary patellar dislocation: a prospective controlled trial. Int Orthop. 2019 Jun;43(6):1495-1501. doi: 10.1007/s00264-018-4243-x. Epub 2018 Nov 20.
PubMed 30460463Xing X, Shi H, Feng S. Does surgical treatment produce better outcomes than conservative treatment for acute primary patellar dislocations? A meta-analysis of 10 randomized controlled trials. J Orthop Surg Res. 2020 Mar 24;15(1):118. doi: 10.1186/s13018-020-01634-5.
PubMed 32209111Liu Z, Yi Q, He L, Yao C, Zhang L, Lu F, Zhang X, Wu M, Geng B, Xia Y, Jiang J. Comparing Nonoperative Treatment, MPFL Repair, and MPFL Reconstruction for Patients With Patellar Dislocation: A Systematic Review and Network Meta-analysis. Orthop J Sports Med. 2021 Sep 28;9(9):23259671211026624. doi: 10.1177/23259671211026624. eCollection 2021 Sep.
PubMed 34604425Mackay ND, Smith NA, Parsons N, Spalding T, Thompson P, Sprowson AP. Medial Patellofemoral Ligament Reconstruction for Patellar Dislocation: A Systematic Review. Orthop J Sports Med. 2014 Aug 8;2(8):2325967114544021. doi: 10.1177/2325967114544021. eCollection 2014 Aug.
PubMed 26535352Bitar AC, Demange MK, D'Elia CO, Camanho GL. Traumatic patellar dislocation: nonoperative treatment compared with MPFL reconstruction using patellar tendon. Am J Sports Med. 2012 Jan;40(1):114-22. doi: 10.1177/0363546511423742. Epub 2011 Oct 19.
PubMed 22016458
Study at a glance
From the registry record, last updated by the sponsor on 21 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Conservative Versus Surgical Management of First Time Patella Dislocations
- ClinicalTrials.gov ID
- NCT05533671
- Acronym / sponsor ID
- AAAU0964
- Conditions
- Patella Dislocation
- Study type
- Interventional
- Recruitment status
- WithdrawnReason stopped: PI left institution
- Enrolment
- 0 participants (actual)
- Lead sponsor
- Columbia UniversityUniversity, hospital or other
- Study start
- Sep 2026 (estimated)
- Primary completion
- Sep 2032 (estimated)
- Study completion
- Sep 2032 (estimated)
- First posted
- 9 Sep 2022 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
There is no consensus regarding whether rehabilitation or surgical management is best for the management of a primary patellar dislocation. Consequently this prospective randomized controlled aims to compare the incidence of recurrent knee dislocations and patient reported outcomes of patients with primary patellar dislocations managed with surgery (medial patellofemoral ligament reconstruction) compared to non-operative management (a standardized rehabilitation protocol, control group).
Detailed description
Long term sequalae of first-time patellar dislocations include recurrent knee instability, osteoarthritis, and a decreased quality of life, and yet there is no consensus on the best management for these patients. Despite an increasing trend toward investigating operative vs non-operative management of primary patellar dislocations, scarce level-1 evidence exists comparing the two treatment modalities. Indeed, the few meta-analyses suggesting improved outcomes of operative treatment for first time patellar dislocations mainly utilize retrospective cohort studies. A randomized-controlled trial of 39 patients with primary patellar dislocations with a mean age of 24 (21 operative vs 18 non-operative), found decreased rates of recurrent knee instability after a mean follow up of 44 months (0% in operative vs 35% in non-operative), and a higher Kujala knee score (88.9 in operative vs 70.8 in non-operative; p=0.001). A controlled but non-randomized prospective controlled trial among 69 patients with a mean age of 18, (30 operative vs 39 non-operative), found lower rates of recurrent knee instability after a mean follow up of 24 months (0% in operative vs 20.5% in non-operative and a higher Kujala knee score (86.3 in operative group vs 80.03 in non-operative; p <0.05).The scarce randomized, prospective data investigating the appropriate management in primary patellar dislocations underscores the importance of the current study in providing high-quality evidence to the debate of how to best manage primary patellar dislocations. This study aims to compare the incidence of recurrent knee dislocations and patient reported outcomes of patients with primary patellar dislocations managed with surgery (medial patellofemoral ligament reconstruction) compared to non-operative management (a standardized rehabilitation protocol, control group).
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
- Model description
- This study will be a prospective randomized controlled trial investigating outcomes (recurrent dislocation rates and participant reported outcomes) in two groups of participants following a primary patella dislocation. Half of the participants will be randomized to operative intervention with a standard medial patellofemoral ligament (MPFL) reconstruction and the other half will be randomized to conservative management with a standardized rehabilitation protocol (non-operative group).
| Arm | Type | Receives |
|---|---|---|
| Operative Group | Experimental | Procedure: medial patellofemoral reconstructionThis group will have surgical procedure called a medial patellofemoral reconstruction where the kneecap is anchored back into its correct position) |
| Non-operative group | Active comparator | Procedure: Non-operative groupThis group will have physical therapy for their knee dislocation by following a specific rehabilitation plan. |
Who may qualify
- Ages
- 12 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (3 listed)
- age 12 and older
- patients seen by the Columbia University Shoulder Elbow and Sports Medicine Service
- patients who experience a first-time patella dislocation
Key exclusion criteria (5 listed)
- coexistent ligament injury or osteochondral fracture necessitating acute surgical intervention
- previous knee surgery
- knee instability prior to injury
- inability or unwillingness to adhere to study participate
- lost to follow up
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| medial patellofemoral reconstructionSurgery to correct dislocated (knocked out of place) knee cap. This surgery anchors the kneecap back into the correct position and supports the kneecap. | Procedure or surgery | Operative Group |
| Non-operative groupPhysical therapy by following a specific regimen. | Procedure or surgery | Non-operative group |
Primary outcome
Change in Kujala Questionnaire Score at 2 weeks
Time frame: Baseline and 2 weeks
The Kujala questionnaire assess symptoms and limitations that a patient may experience as a result of a knee injury. Scores range from 0-100 with a higher score indicating less limitation. Scores will be reported at each time point.
Change in Kujala Questionnaire Score at 6 weeks
Time frame: Baseline and 6 weeks
The Kujala questionnaire assess symptoms and limitations that a patient may experience as a result of a knee injury. Scores range from 0-100 with a higher score indicating less limitation. Scores will be reported at each time point.
Change in Kujala Questionnaire Score at 3 months
Time frame: Baseline and 3 months
The Kujala questionnaire assess symptoms and limitations that a patient may experience as a result of a knee injury. Scores range from 0-100 with a higher score indicating less limitation. Scores will be reported at each time point.
Change in Kujala Questionnaire Score at 6 months
Time frame: Baseline and 6 months
The Kujala questionnaire assess symptoms and limitations that a patient may experience as a result of a knee injury. Scores range from 0-100 with a higher score indicating less limitation. Scores will be reported at each time point.
Change in Kujala Questionnaire Score at 1 year
Time frame: Baseline and 1 year
The Kujala questionnaire assess symptoms and limitations that a patient may experience as a result of a knee injury. Scores range from 0-100 with a higher score indicating less limitation. Scores will be reported at each time point.
Change in Kujala Questionnaire Score at 2 years
Time frame: Baseline and 2 years
The Kujala questionnaire assess symptoms and limitations that a patient may experience as a result of a knee injury. Scores range from 0-100 with a higher score indicating less limitation. Scores will be reported at each time point.
Change in Kujala Questionnaire Score at 5 years
Time frame: Baseline and 5 years
The Kujala questionnaire assess symptoms and limitations that a patient may experience as a result of a knee injury. Scores range from 0-100 with a higher score indicating less limitation. Scores will be reported at each time point.
Change in Kujala Questionnaire Score at 10 years
Time frame: Baseline and 10 years
The Kujala questionnaire assess symptoms and limitations that a patient may experience as a result of a knee injury. Scores range from 0-100 with a higher score indicating less limitation. Scores will be reported at each time point.
Time to first re-dislocation
Time frame: Up to 10 years
Time to first re-dislocation following intervention, measured in weeks
42 secondary outcomes
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) at 2 weeks
Time frame: Baseline and 2 weeks
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) at 6 weeks
Time frame: Baseline and 6 weeks
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) at 3 months
Time frame: Baseline and 3 months
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) at 6 months
Time frame: Baseline and 6 months
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) at 1 year
Time frame: Baseline and 1 Year
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) at 2 years
Time frame: Baseline and 2 Years
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) at 5 years
Time frame: Baseline and 5 Years
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) at 10 years
Time frame: Baseline and 10 Years
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) at 2 weeks
Time frame: Baseline and 2 weeks
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) at 6 weeks
Time frame: Baseline and 6 weeks
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) at 3 Months
Time frame: Baseline and 3 Months
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) at 6 Months
Time frame: Baseline and 6 Months
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) at 1 Year
Time frame: Baseline and 1 Year
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) at 2 Years
Time frame: Baseline and 2 Years
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) at 5 Years
Time frame: Baseline and 5 Years
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) depression computer adaptive test (CAT) at 10 Years
Time frame: Baseline and 10 Years
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) at 2 weeks
Time frame: Baseline and 2 weeks
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) at 6 weeks
Time frame: Baseline and 6 weeks
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) at 3 months
Time frame: Baseline and 3 months
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) at 6 months
Time frame: Baseline and 6 months
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) at 1 year
Time frame: Baseline and 1 year
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) at 2 years
Time frame: Baseline and 2 years
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) at 5 years
Time frame: Baseline and 5 years
Change in the Patient-Reported Outcome Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CAT) at 10 years
Time frame: Baseline and 10 years
Percentage of participants who re-dislocate their knee after treatment at each time point within each group
Time frame: 2 weeks 6 weeks, 3 months, 6 months, 1 year, 2 years, 5 years and 10 years
Time to return to full activity or sports for each group
Time frame: Up to 10 years
Change in the Banff Patella Instability Instrument at 2 weeks
Time frame: Baseline and 2 weeks
Change in the Banff Patella Instability Instrument at 6 weeks
Time frame: Baseline and 6 weeks
Change in the Banff Patella Instability Instrument at 3 months
Time frame: Baseline and 3 months
Change in the Banff Patella Instability Instrument at 6 months
Time frame: Baseline and 6 months
Change in the Banff Patella Instability Instrument at 1 year
Time frame: Baseline and 1 year
Change in the Banff Patella Instability Instrument at 2 years
Time frame: Baseline and 2 years
Change in the Banff Patella Instability Instrument at 5 years
Time frame: Baseline and 5 years
Change in the Banff Patella Instability Instrument at 10 years
Time frame: Baseline and 10 years
Change in Norwich Patellar Instability Score at 2 weeks
Time frame: Baseline and 2 weeks
Change in Norwich Patellar Instability Score at 6 weeks
Time frame: Baseline and 6 weeks
Change in Norwich Patellar Instability Score at 3 months
Time frame: Baseline and 3 months
Change in Norwich Patellar Instability Score at 6 months
Time frame: Baseline and 6 months
Change in Norwich Patellar Instability Score at 1 year
Time frame: Baseline and 1 year
Change in Norwich Patellar Instability Score at 2 years
Time frame: Baseline and 2 years
Results and safety
The study was withdrawn before enrolling participants, so there are no results.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 21 Sep 2026.
- Background: PubMed 30460463Zheng X, Hu Y, Xie P, Cui M, Ma X, Feng YE, Gu J, Gao S. Surgical medial patellofemoral ligament reconstruction versus non-surgical treatment of acute primary patellar dislocation: a prospective controlled trial. Int Orthop. 2019 Jun;43(6):1495-1501. doi: 10.1007/s00264-018-4243-x. Epub 2018 Nov 20.
- Background: PubMed 32209111Xing X, Shi H, Feng S. Does surgical treatment produce better outcomes than conservative treatment for acute primary patellar dislocations? A meta-analysis of 10 randomized controlled trials. J Orthop Surg Res. 2020 Mar 24;15(1):118. doi: 10.1186/s13018-020-01634-5.
- Background: PubMed 34604425Liu Z, Yi Q, He L, Yao C, Zhang L, Lu F, Zhang X, Wu M, Geng B, Xia Y, Jiang J. Comparing Nonoperative Treatment, MPFL Repair, and MPFL Reconstruction for Patients With Patellar Dislocation: A Systematic Review and Network Meta-analysis. Orthop J Sports Med. 2021 Sep 28;9(9):23259671211026624. doi: 10.1177/23259671211026624. eCollection 2021 Sep.
- Background: PubMed 26535352Mackay ND, Smith NA, Parsons N, Spalding T, Thompson P, Sprowson AP. Medial Patellofemoral Ligament Reconstruction for Patellar Dislocation: A Systematic Review. Orthop J Sports Med. 2014 Aug 8;2(8):2325967114544021. doi: 10.1177/2325967114544021. eCollection 2014 Aug.
- Background: PubMed 22016458Bitar AC, Demange MK, D'Elia CO, Camanho GL. Traumatic patellar dislocation: nonoperative treatment compared with MPFL reconstruction using patellar tendon. Am J Sports Med. 2012 Jan;40(1):114-22. doi: 10.1177/0363546511423742. Epub 2011 Oct 19.
- Individual participant dataSharing planned: No
Related trials for Patella Dislocation
RecruitingObservational study
JUPITER 4.0 - Risk Factors for Failure of Isolated Medial Patellofemoral Ligament Reconstruction
Patellar Dislocation, Recurrent, Patellar Dislocation
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
David Trofa, MD principal investigator
Associate Professor of Orthopaedic Surgery
Questions about this trial
What is this clinical trial studying?
A study testing medial patellofemoral reconstruction and Non-operative group in people with Patella Dislocation, run by Columbia University.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: withdrawn, as of the sponsor's last update on 21 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study was withdrawn before enrolling participants, so there are no results.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change in Kujala Questionnaire Score at 2 weeks (time frame: Baseline and 2 weeks). The study lists 9 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT05533671, which also lists 5 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 21 Sep 2026; AzTrials last refreshed its copy on 27 Oct 2026.