ACL ReconstructionACL-LESSNCT06829849
Validity of the SHD-LESS Scale After ACL Reconstruction
An observational study of ACL Reconstruction and ACL Injury, run by University Hospital, Caen at 1 site in France.
Trial summary
After anterior cruciate ligament reconstruction (ACL-R), Single Hop for Distance (SHD) performance aids in decision-making, particularly for return-to-sport assessments. However, asymmetrical landing kinematics are common after ACL-R, even with symmetrical performances, and increase the risk of re-injury. Read more about this study
- Who is it for?
- Ages 18 to 40 years
- Conditions the study is for
- ACL Reconstruction, ACL Injury
- What is being tested?
- Landing error assessment during a SHD task using the SHD-LESS scale
- How many people
- 60 participants
- Where
- 1 siteFrance
- Study dates
- 1 Mar 2024to 15 Nov 2025
- Phase
- Observational
- 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 18 to 40 years
- All sexes
- No healthy volunteers
- Adult
Study population: All sports patients included in the sport medicine follow-up protocole with isokinetic muscular assessment at 6-12 months after ACL reconstruction surgery since March 2024 in the sports medicine department (Return To Sport Process)
Who may be able to join
- Patients aged 18-40, who have undergone a first ACL reconstruction more than 6 months ago and are being followed in a sports medicine care pathway
- Affiliated with a health insurance plan
- Information form: Non-objection to the use of data for research purposes
Who cannot join
- Previous ligament surgery of the lower limbs prior to ACL reconstruction
- Complex ligament injury (lateral ligaments, posterior cruciate ligament)
- Recent muscle injuries
- History of injury to the uninjured knee
- Pregnant woman
- Inability to perform a muscular assessment
- Postoperative complications (deep vein thrombosis, sepsis, stiffness/arthrofibrosis)
- Neurological history with residual effects or taking medication that affects balance/coordination
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Validity of the SHD-LESS Scale in Detecting Landing Asymmetry and Its Association With Functional Status After ACL Reconstruction.
After anterior cruciate ligament reconstruction (ACL-R), Single Hop for Distance (SHD) performance aids in decision-making, particularly for return-to-sport assessments. However, asymmetrical landing kinematics are common after ACL-R, even with symmetrical performances, and increase the risk of re-injury. To support clinical practice, several qualitative scales have been developed as valid and reliable tools for assessing landing quality. In 2022, Measson et al. adapted the Landing Error Scoring System for use during an SHD task (SHD-LESS scale) and demonstrated its reliability among healthy individuals.
The aim of this study is to test the validity of this scale after ACL-R by evaluating its ability to identify asymmetrical landing and characterize differences between the operated and uninjured limb. The second objective is to assess its association with knee muscle strength, functional status and psychological readiness.
- Conditions
- ACL Reconstruction, ACL Injury
- Being tested
- Landing error assessment during a SHD task using the SHD-LESS scale
- Medical subject headings
- Anterior Cruciate Ligament Injuries
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Landing error assessment during a SHD task using the SHD-LESS scaleDiagnostic test
Participants will perform a 2D-camera-recorded SHD task, with the SHD-LESS scored by two sports medicine physicians. Additional tests include isokinetic muscle testing, as well as functional and psychological status assessments, following standard clinical practice.
| Study group | Role | What they receive |
|---|---|---|
| ACL reconstruction group | All sports patients who had a muscle evaluation at 6 to 12 months after ACLR since March 2024 Receives: Diagnostic Test: Landing error assessment during a SHD task using the SHD-LESS scale |
What is being measured
The primary outcome is the main question the study is designed to answer.
Single Hop for Distance, Landing Error Scoring System (SHD-LESS) scale
The LESS (Landing Error Scoring System) scale is a 13-item tool used to assess landing technique during a hop task.
Measured: One measurement during the visit at 6 to 12 months after surgery
Secondary outcomes (3)
Strength
Measurement of knee extensors and flexors peak strength (in newton.meter, Nm) on isokinetic dynamometer
Measured: One measurement during the visit at 6 to 12 months after surgery
ACL-RSI questionnaire (Anterior Cruciate Ligament-Return to Sport after Injury)
The ACL-RSI measures the patient's understanding of his knee. It comprises 12 questions with a score of 1 to 10 for each
Measured: One measurement during the visit at 6 to 12 months after surgery
International Knee Documentation Committee (IKDC) score
Knee level of function based on patient-reported measures from symptoms to daily activities. The IKDC score includes sections on knee symptoms (7 items), function (2 items), and sports activities (2 items), with scores ranging from 0 (lowest function, highest symptoms) to 100 (highest function, lowest symptoms).
Measured: One measurement during the visit at 6 to 12 months after surgery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted17 Feb 2025
- Study start1 Mar 2024
- Primary completion2 Oct 2025
- Study completion15 Nov 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for ACL ReconstructionStudies of the same condition, open and under way.
- More trials run by University Hospital, CaenThe 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
- Observational
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Enrolment
- 60 participants (actual)
Sponsor and investigators
- Lead sponsor
- University Hospital, Caen
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Joffrey DRIGNY, University Hospital, Caen
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06829849
- Sponsor's protocol ID
- ACL-LESS
- Acronym
- ACL-LESS
- Status last verified
- Mar 2026
- First submitted
- 11 Feb 2025
- Last updated
- 1 Apr 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Publications
Measson MV, Ithurburn MP, Rambaud AJ. Intra-rater Reliability of a Qualitative Landing Scale for the Single-Hop Test: A Pilot Study. Int J Sports Phys Ther. 2022 Apr 1;17(3):493-500. doi: 10.26603/001c.33066. eCollection 2022.
PubMed 35391866Welling W, Benjaminse A, Seil R, Lemmink K, Gokeler A. Altered movement during single leg hop test after ACL reconstruction: implications to incorporate 2-D video movement analysis for hop tests. Knee Surg Sports Traumatol Arthrosc. 2018 Oct;26(10):3012-3019. doi: 10.1007/s00167-018-4893-7. Epub 2018 Mar 16.
PubMed 29549389
Study at a glance
From the registry record, last updated by the sponsor on 1 Apr 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Validity of the SHD-LESS Scale in Detecting Landing Asymmetry and Its Association With Functional Status After ACL Reconstruction.
- ClinicalTrials.gov ID
- NCT06829849
- Acronym / sponsor ID
- ACL-LESS / ACL-LESS
- Conditions
- ACL Reconstruction, ACL Injury
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 60 participants (actual)
- Lead sponsor
- University Hospital, CaenUniversity, hospital or other
- Study start
- 1 Mar 2024 (actual)
- Primary completion
- 2 Oct 2025 (actual)
- Study completion
- 15 Nov 2025 (actual)
- First posted
- 17 Feb 2025 (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.
After anterior cruciate ligament reconstruction (ACL-R), Single Hop for Distance (SHD) performance aids in decision-making, particularly for return-to-sport assessments. However, asymmetrical landing kinematics are common after ACL-R, even with symmetrical performances, and increase the risk of re-injury. To support clinical practice, several qualitative scales have been developed as valid and reliable tools for assessing landing quality. In 2022, Measson et al. adapted the Landing Error Scoring System for use during an SHD task (SHD-LESS scale) and demonstrated its reliability among healthy individuals.
The aim of this study is to test the validity of this scale after ACL-R by evaluating its ability to identify asymmetrical landing and characterize differences between the operated and uninjured limb. The second objective is to assess its association with knee muscle strength, functional status and psychological readiness.
Study design
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| ACL reconstruction group | – | Diagnostic Test: Landing error assessment during a SHD task using the SHD-LESS scaleAll sports patients who had a muscle evaluation at 6 to 12 months after ACLR since March 2024 |
Who may qualify
- Ages
- 18 to 40 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult
- Study population
- All sports patients included in the sport medicine follow-up protocole with isokinetic muscular assessment at 6-12 months after ACL reconstruction surgery since March 2024 in the sports medicine department (Return To Sport Process)
Key inclusion criteria (3 listed)
- Patients aged 18-40, who have undergone a first ACL reconstruction more than 6 months ago and are being followed in a sports medicine care pathway
- Affiliated with a health insurance plan
- Information form: Non-objection to the use of data for research purposes
Key exclusion criteria (8 listed)
- Previous ligament surgery of the lower limbs prior to ACL reconstruction
- Complex ligament injury (lateral ligaments, posterior cruciate ligament)
- Recent muscle injuries
- History of injury to the uninjured knee
- Pregnant woman
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 |
|---|---|---|
| Landing error assessment during a SHD task using the SHD-LESS scaleParticipants will perform a 2D-camera-recorded SHD task, with the SHD-LESS scored by two sports medicine physicians. Additional tests include isokinetic muscle testing, as well as functional and psychological status assessments, following standard clinical practice. | Diagnostic test | ACL reconstruction group |
Primary outcome
Single Hop for Distance, Landing Error Scoring System (SHD-LESS) scale
Time frame: One measurement during the visit at 6 to 12 months after surgery
The LESS (Landing Error Scoring System) scale is a 13-item tool used to assess landing technique during a hop task.
3 secondary outcomes
Strength
Time frame: One measurement during the visit at 6 to 12 months after surgery
ACL-RSI questionnaire (Anterior Cruciate Ligament-Return to Sport after Injury)
Time frame: One measurement during the visit at 6 to 12 months after surgery
International Knee Documentation Committee (IKDC) score
Time frame: One measurement during the visit at 6 to 12 months after surgery
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 1 Apr 2026.
- Background: PubMed 35391866Measson MV, Ithurburn MP, Rambaud AJ. Intra-rater Reliability of a Qualitative Landing Scale for the Single-Hop Test: A Pilot Study. Int J Sports Phys Ther. 2022 Apr 1;17(3):493-500. doi: 10.26603/001c.33066. eCollection 2022.
- Background: PubMed 29549389Welling W, Benjaminse A, Seil R, Lemmink K, Gokeler A. Altered movement during single leg hop test after ACL reconstruction: implications to incorporate 2-D video movement analysis for hop tests. Knee Surg Sports Traumatol Arthrosc. 2018 Oct;26(10):3012-3019. doi: 10.1007/s00167-018-4893-7. Epub 2018 Mar 16.
- Individual participant dataSharing planned: Undecided
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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.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of ACL Reconstruction and ACL Injury, run by University Hospital, Caen at 1 site in France.
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 8 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: finished, as of the sponsor's last update on 1 Apr 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.
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 is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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?
Single Hop for Distance, Landing Error Scoring System (SHD-LESS) scale (time frame: One measurement during the visit at 6 to 12 months after surgery). 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 NCT06829849, which also lists 2 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 1 Apr 2026.