Jumper's KneeNCT06306664
Effect of Two Different Modes of Polarized Polychromatic Non-coherent Light Therapy on Jumper's Knee
A study testing Bioptron in people with Jumper's Knee, run by Cairo University at 1 site in Egypt.
Trial summary
The purposes of this study are: 1. To examine the combined effects of Yellow CPPNLT and conventional treatment on pain intensity, pain pressure threshold, functional disability, and muscle strength in athletic jumper knee. 2. Read more about this study
- Who is it for?
- Ages 15 to 35 yearsHealthy volunteers can take part
- Conditions the study is for
- Jumper's Knee
- What is being tested?
- Bioptron
- Type of treatment
- Medical device
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 60 participants
- Where
- 1 siteEgypt
- Study dates
- 1 Jan 2024to 1 Dec 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
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 15 to 35 years
- All sexes
- Healthy volunteers accepted
- Child, Adult
Who may be able to join
- History of Patellar tendinitis and anterior knee pain.
- Age will be ranged from 15 to 35 years.
- Both genders.
- The onset of pain for over 3 months.
Who cannot join
- Knee surgery within the previous 6 months.
- Chronic joint diseases.
- Corticosteroid injection in the patellar tendon within the previous 3 months.
- Use of drugs 48 hours previously (e.g., NSAIDs).
- Any other concomitant treatment for PT.
Trial locations and contacts
1 site in 1 country.
About this study
The purposes of this study are:
- To examine the combined effects of Yellow CPPNLT and conventional treatment on pain intensity, pain pressure threshold, functional disability, and muscle strength in athletic jumper knee.
- To examine the combined effects of Green CPPNLT and conventional treatment on pain intensity, pain pressure threshold, functional disability, and muscle strength in athletic jumper knee.
3 3- To compare between the effects of Yellow CPPNLT and Green CPPNLT on pain intensity, pain pressure threshold, functional disability, and muscle strength in athletic jumper knee.
Read the detailed description
Jumper's knee is an overuse injury of the tendon that alters the knee due to repeated stress of activities. Symptoms include pain in the front of the knee. The tears are typically caused by accumulated stress on the patellar or quadriceps tendon. As the name implies, the condition is common in athletes from jumping sports, where there is a high demand for the speed and power of leg extensors. These sports often lead to high eccentric quadriceps loadings, such as volleyball, track (long and high jump), basketball, long-distance running, and skiing. The prevalence of jumper knee is not well examined so far. For non-elite adult athletes the prevalence varies between 14.4% and 2.5% for different sports.Only 2.4% of adolescent professional soccer players sustain PT. However, knee pain, focal tenderness or even acute episodes of PT have a major impact on each player's development, time off the pitch, and career.Bioptron was used for treatment of arthritis, neck\&back pain by stimulating blood circulation, reducing inflammation and relieving muscle spasm. There are some studies that have discussed the extent of the effect of the Bioptron Light Therapy on musculoskeletal disorders such as; rotator cuff tendinitis, tennis elbow, carpal tunnel syndrome, acute patellar tendinopathy and acute ankle sprain. There is a lack of the evidence of the clinical guidelines of patellar tendinitis. Up to our knowledge, there is no clear recommendation about efficiency of different colors of Bioptron light therapy on jumper knee. So; this study will be conducted to determine efficiency of yellow and green colors of polychromatic non-coherent light. Sixty subjects will participate in this study and will be divided randomly into three equal groups.Group A (Study group): Will receive green filter of bioptron light therapy and conventional treatment for jumper knee,group B (Study group): Will receive yellow filter of bioptron light therapy and conventional treatment for jumper knee and group C (Control group): Will receive conventional treatment (ice application+ exercise program) for jumper knee.
- Conditions
- Jumper's Knee
- Being tested
- Bioptron, Placebo Comparator
- Keywords
- Polarized Polychromatic Non Coherent Light (Bioptron)
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
BioptronDevice
Also called Polarized Polychromatic Non-Coherent Light, Hyperlight
Bioptron safely treats arthritis, neck \& back pain by stimulating blood circulation, reducing inflammation and relieving muscle spasms. For just ten minutes per day, our life-transforming technology offers the highest levels of pain relief by reaching deep into joints, muscles and ligaments.
Placebo ComparatorOther
Patients will receive ice application+Exercises program designed for jumper knee
| Study group | Role | What they receive |
|---|---|---|
| Group A | Experimental | the patients will receive green filter of bioptron light therapy and conventional treatment((ice application+ exercise program)) for jumper knee three times a week for four weeks. Receives: Device: Bioptron |
| Group B | Experimental | the patients will receive yellow filter of bioptron light therapy and conventional treatment for jumper knee three times a week for four weeks. Receives: Device: Bioptron |
| Control group | Placebo comparator | the patients will receive conventional treatment (ice application+ exercise program) for jumper knee three times a week for four weeks. Receives: Other: Placebo Comparator |
What is being measured
The primary outcome is the main question the study is designed to answer.
Pain (Visual analogue scale).
The visual analog scale (VAS) is a validated, subjective measure for acute and chronic pain. The VAS score for grading of pain consists of a 10 centimeters (cm) line with 10 mm (0.01 cm) to each point of the scale and two end-points representing no pain and worst possible pain.
Measured: Visual analogue scale will be investigated at baseline and after the treatment period of 4 weeks.
pain intensity (Pressure algometry)
Pressure pain threshold will be measured with algometry test FPX25 using 1-cm2 rubber tip on the knee extensors.10, 11 pressures will be applied slowly until the participant first feels the pain and response by saying stop there.
Measured: Pressure algometry will be investigated at baseline and after the treatment period of 4 weeks.
Disability questionnaire (Victorian institute of sport assessment-patella).
The VISA-P, formerly known as the Victorian institute of sport assessment -patella Questionnaire, The VISA-P is questionnaire that assesses symptoms, simple tests of function, and the ability to play sports.
Measured: The VISA-P questionnaire will be investigated at baseline and after the treatment period of 4 weeks.
Muscle strength (Lafayette Hand held dynamometer)
The subjects will be positioned in sitting on chair and we will apply resistance when performing the dynamometer on patients and they will try to make maximal effort against resistance and we will record the change of length or resistance.
Measured: The Lafayette hand held dynamometer will be investigated at baseline and after the treatment period of 4 weeks.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Mar 2024
- Study start1 Jan 2024
- Primary completion29 Nov 2026 (estimated)
- Study completion1 Dec 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Jumper's KneeStudies of the same condition, open and under way.
- More trials run by Cairo 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
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 60 participants (actual)
Sponsor and investigators
- Lead sponsor
- Cairo University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Mahmoud Shahien, Cairo University
- Investigators
- Adel R Ahmed, PHD, Study director, Cairo University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06306664
- Sponsor's protocol ID
- PT.REC/012/004881
- Status last verified
- May 2026
- First submitted
- 25 Feb 2024
- Last updated
- 19 May 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 19 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effect of Two Different Modes of Polarized Polychromatic Non-coherent Light Therapy on Jumper's Knee
- ClinicalTrials.gov ID
- NCT06306664
- Acronym / sponsor ID
- PT.REC/012/004881
- Conditions
- Jumper's Knee
- Keywords
- Polarized Polychromatic Non Coherent Light (Bioptron)
- Study type
- Interventional
- Recruitment status
- Active, not recruiting
- Enrolment
- 60 participants (actual)
- Lead sponsor
- Cairo UniversityUniversity, hospital or other
- Study start
- 1 Jan 2024 (actual)
- Primary completion
- 29 Nov 2026 (estimated)
- Study completion
- 1 Dec 2026 (estimated)
- First posted
- 12 Mar 2024 (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.
The purposes of this study are:
- To examine the combined effects of Yellow CPPNLT and conventional treatment on pain intensity, pain pressure threshold, functional disability, and muscle strength in athletic jumper knee.
- To examine the combined effects of Green CPPNLT and conventional treatment on pain intensity, pain pressure threshold, functional disability, and muscle strength in athletic jumper knee.
3 3- To compare between the effects of Yellow CPPNLT and Green CPPNLT on pain intensity, pain pressure threshold, functional disability, and muscle strength in athletic jumper knee.
Detailed description
Jumper's knee is an overuse injury of the tendon that alters the knee due to repeated stress of activities. Symptoms include pain in the front of the knee. The tears are typically caused by accumulated stress on the patellar or quadriceps tendon. As the name implies, the condition is common in athletes from jumping sports, where there is a high demand for the speed and power of leg extensors. These sports often lead to high eccentric quadriceps loadings, such as volleyball, track (long and high jump), basketball, long-distance running, and skiing. The prevalence of jumper knee is not well examined so far. For non-elite adult athletes the prevalence varies between 14.4% and 2.5% for different sports.Only 2.4% of adolescent professional soccer players sustain PT. However, knee pain, focal tenderness or even acute episodes of PT have a major impact on each player's development, time off the pitch, and career.Bioptron was used for treatment of arthritis, neck\&back pain by stimulating blood circulation, reducing inflammation and relieving muscle spasm. There are some studies that have discussed the extent of the effect of the Bioptron Light Therapy on musculoskeletal disorders such as; rotator cuff tendinitis, tennis elbow, carpal tunnel syndrome, acute patellar tendinopathy and acute ankle sprain. There is a lack of the evidence of the clinical guidelines of patellar tendinitis. Up to our knowledge, there is no clear recommendation about efficiency of different colors of Bioptron light therapy on jumper knee. So; this study will be conducted to determine efficiency of yellow and green colors of polychromatic non-coherent light. Sixty subjects will participate in this study and will be divided randomly into three equal groups.Group A (Study group): Will receive green filter of bioptron light therapy and conventional treatment for jumper knee,group B (Study group): Will receive yellow filter of bioptron light therapy and conventional treatment for jumper knee and group C (Control group): Will receive conventional treatment (ice application+ exercise program) for jumper knee.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (participant)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Group A | Experimental | Device: Bioptronthe patients will receive green filter of bioptron light therapy and conventional treatment((ice application+ exercise program)) for jumper knee three times a week for four weeks. |
| Group B | Experimental | Device: Bioptronthe patients will receive yellow filter of bioptron light therapy and conventional treatment for jumper knee three times a week for four weeks. |
| Control group | Placebo comparator | Other: Placebo Comparatorthe patients will receive conventional treatment (ice application+ exercise program) for jumper knee three times a week for four weeks. |
Who may qualify
- Ages
- 15 to 35 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
Key inclusion criteria (4 listed)
- History of Patellar tendinitis and anterior knee pain.
- Age will be ranged from 15 to 35 years.
- Both genders.
- The onset of pain for over 3 months.
Key exclusion criteria (5 listed)
- Knee surgery within the previous 6 months.
- Chronic joint diseases.
- Corticosteroid injection in the patellar tendon within the previous 3 months.
- Use of drugs 48 hours previously (e.g., NSAIDs).
- Any other concomitant treatment for PT.
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 |
|---|---|---|
| BioptronAlso: Polarized Polychromatic Non-Coherent Light, HyperlightBioptron safely treats arthritis, neck \& back pain by stimulating blood circulation, reducing inflammation and relieving muscle spasms. For just ten minutes per day, our life-transforming technology offers the highest levels of pain relief by reaching deep into joints, muscles and ligaments. | Device | Group A, Group B |
| Placebo ComparatorPatients will receive ice application+Exercises program designed for jumper knee | Other | Control group |
Primary outcome
Pain (Visual analogue scale).
Time frame: Visual analogue scale will be investigated at baseline and after the treatment period of 4 weeks.
The visual analog scale (VAS) is a validated, subjective measure for acute and chronic pain. The VAS score for grading of pain consists of a 10 centimeters (cm) line with 10 mm (0.01 cm) to each point of the scale and two end-points representing no pain and worst possible pain.
pain intensity (Pressure algometry)
Time frame: Pressure algometry will be investigated at baseline and after the treatment period of 4 weeks.
Pressure pain threshold will be measured with algometry test FPX25 using 1-cm2 rubber tip on the knee extensors.10, 11 pressures will be applied slowly until the participant first feels the pain and response by saying stop there.
Disability questionnaire (Victorian institute of sport assessment-patella).
Time frame: The VISA-P questionnaire will be investigated at baseline and after the treatment period of 4 weeks.
The VISA-P, formerly known as the Victorian institute of sport assessment -patella Questionnaire, The VISA-P is questionnaire that assesses symptoms, simple tests of function, and the ability to play sports.
Muscle strength (Lafayette Hand held dynamometer)
Time frame: The Lafayette hand held dynamometer will be investigated at baseline and after the treatment period of 4 weeks.
The subjects will be positioned in sitting on chair and we will apply resistance when performing the dynamometer on patients and they will try to make maximal effort against resistance and we will record the change of length or resistance.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 19 May 2026.
Related trials for Jumper's Knee
Recruiting
Identification of Kinematic Variables Specific of Patellar Tendinopathy in Athletes at Risk
Patellar Tendinitis, Jumper's Knee
Recruiting
Effects of Extracorporeal Shockwave Therapy Versus Dry Needling on Jumpers Knee
Pain, Quality of Life
Not yet recruiting
Long-Hold Yielding Isometric Exercise for Patellar Tendinopathy in Weightlifting Athletes
Patellar Tendinopathy / Jumpers Knee
Active, not recruiting
Influence of Restitution Time in Treatment of Patellar Tendinopathy
Patellar Tendinopathy, Jumper's Knee
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.
Adel R Ahmed, PHD study director
Cairo University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Bioptron in people with Jumper's Knee, run by Cairo University at 1 site in Egypt.
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 4 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: under way, not looking for participants, as of the sponsor's last update on 19 May 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 Egypt. 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. Some participants in this study may receive a placebo. 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?
This study is still under way. Results are not available in the source record yet.
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?
Pain (Visual analogue scale). (time frame: Visual analogue scale will be investigated at baseline and after the treatment period of 4 weeks.). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 19 May 2026.