Injury TraumaticNCT06257303
Relationship Between Knee Valgus and Landing Biomechanics
A study testing Frontal Plane Projection Angle in people with Injury Traumatic and Injury;Sports, run by Bahçeşehir University at 1 site in Turkey (Türkiye).
Trial summary
It has been shown that especially adolescent female athletes have a very high risk of injury compared to males. Gender differences (anatomical, biomechanical, neuromuscular and hormonal differences) contribute to the increased risk of injury. Read more about this study
- Who is it for?
- Ages 10 to 19 years, women onlyHealthy volunteers can take part
- Conditions the study is for
- Injury Traumatic, Injury;Sports, Injury, Knee
- What is being tested?
- Frontal Plane Projection Angle
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 56 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 30 Apr 2024to 10 Jan 2025
- 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 10 to 19 years
- Women only
- Healthy volunteers accepted
- Child, Adult
Who may be able to join
- Having been training basketbol for at least 6 months,
- Being between the ages of 10-19
- Being female
- Having an increase of 10 degrees or more in the frontal plane projection angle (for the valgus group)
- Having a frontal plane projection angle at normal values (for the control group)
- No active pain in the lower extremity
- No mental and psychological problems
Who cannot join
- Non-volunteer athletes
- Having a body mass index of 30 kg/m² and above
- Having undergone lower extremity surgery
- Having chronic knee instability.
- Having had a meniscus or ligament injury
- Having a cardiac, musculoskeletal, vestibular and neurological disease
- Having been using corticosteroids and nonsteroidal drugs for a long time.
- Being pregnant.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Investigation of the Correlation Between Dynamic Knee Valgus and Landing Biomechanics, Core Endurance and Ankle Dorsiflexion in Adolescent Female Basketball Players
It has been shown that especially adolescent female athletes have a very high risk of injury compared to males. Gender differences (anatomical, biomechanical, neuromuscular and hormonal differences) contribute to the increased risk of injury. Basketball, one of the sports preferred by adolescent girls, brings with it high risks of injury due to the high participation rate among team sports. The occurrence of lower extremity injuries such as anterior cruciate ligament injuries and patellofemoral pain during dynamic activities (e.g., landing, running, etc.) has been associated with dynamic knee valgus, a pattern of lower extremity malalignment. At the same time, weakness of the core muscles and inadequate ankle dorsiflexion joint range of motion also contribute to the injury. The aim of this study is to examine the correlation between landing biomechanics, core endurance and ankle dorsiflexion angle in adolescent female basketball players with dynamic knee valgus.
Read the detailed description
Although interest in identifying injury risk factors has increased recently, it has been stated that adolescent athletes are especially vulnerable to injury. Such sex-based differences that may explain the increased risk of anterior cruciate ligament injury in girls compared with boys include anatomical, biomechanical, neuromuscular, and hormonal differences. A broad range of physiological mechanisms (e.g., hormone control, differences in joint geometry, collagen turnover, etc.) play a role in lower extremity injuries and may explain these sex differences. Basketball, one of the sports preferred by adolescent girls, brings with it high risks of injury due to the high participation rate among team sports. As a result of the studies, it was revealed that 7 to 10 people out of every 1000 were injured. 16% of female basketball players are at risk of anterior cruciate ligament injury during their careers, and this rate is 2 to 4 times higher than that of men. The occurrence of lower extremity injuries such as anterior cruciate ligament injuries and patellofemoral pain during dynamic activities (e.g., landing, running, etc.) has been associated with dynamic knee valgus. A common malalignment that may occur in the lower extremities during sports activities is dynamic knee valgus, which has been suggested as the underlying mechanism of knee injury. Dynamic knee valgus involves a combination of knee abduction, tibial internal rotation, and hip adduction. Numerous studies associate core muscle weakness with lower extremity malalignment. Changes in the trunk-pelvis-hip complex can lead to dynamic knee valgus, a dysfunction that also appears to be influenced by factors such as gender, physical activity level, and body mass index. In post-jump landing biomechanics, limitations in ankle dorsiflexion joint range of motion are considered a modifiable injury risk factor for athletes. Ankle dorsiflexion during landing helps reduce ground reaction forces and facilitates knee and hip flexion in the sagittal plane. It has been shown that decreased ankle dorsiflexion joint range of motion limits peak flexion angles of the ankle, knee, and hip and increases peak knee abduction angles during descent. This situation shows the relationship between ankle dorsiflexion joint range of motion and frontal plane projection angle. This study aims to examine the correlation between landing biomechanics, core endurance and ankle dorsiflexion angle in adolescent female basketball players with dynamic knee valgus. It was hypothesized that participants with greater knee valgus had poor core stabilization ability and limited dorsiflexion angle.
- Conditions
- Injury Traumatic, Injury;Sports, Injury, Knee, Injury, Ankle
- Being tested
- Frontal Plane Projection Angle
- Keywords
- injury preventation, frontal plane projection angle, landing error scoring system, weight bearing lunge test
- Medical subject headings
- Wounds and Injuries, Athletic Injuries, Knee Injuries, Ankle Injuries
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Frontal Plane Projection AngleOther
Participants will stand with their feet aligned in the sagittal plane and their arms crossed across their chests. By prior instruction, subjects will be asked to squat up to 60º knee flexion in a controlled manner without losing their balance, before returning to the starting position. Digital recordings of the frontal plane will be made while individuals perform a single-leg squat test at 60º knee flexion 3 times.
| Study group | Role | What they receive |
|---|---|---|
| Valgus Group | Active comparator | If there is an increase of 10 degrees or more in the frontal plane projection angle while squatting on one leg, the participant will be included in this group. Receives: Other: Frontal Plane Projection Angle |
| Control Group | Active comparator | If the frontal plane projection angle is in the normal values while squatting on one leg, the participant will be included in this group. Receives: Other: Frontal Plane Projection Angle |
What is being measured
The primary outcome is the main question the study is designed to answer.
Landing Error Scoring System
The Landing Error Scoring System (LESS) is a screening tool used to identify athletes who exhibit movement patterns that pose a high risk of injury in post-jump landing biomechanics. Evaluaters will score 17 items based on movements during the jump-landing task. The overall LESS score ranges from 0 to 17 errors, with lower scores reflecting fewer landing errors. An error score of five or more indicates poor jumping technique and is associated with a higher risk of lower extremity injury. Participants will begin LESS standing on a 30 cm high box and will be asked to jump forward a distance equal to half their height (indicated by a line on the ground) and make a maximum vertical jump once they land. Participants will be provided with a verbal explanation and visual demonstration before testing and will be allowed to try the procedure until they become familiar with it. Each participant will complete 3 trials of LESS and the resulting average will be considered for analysis.
Measured: Baseline
Secondary outcomes (2)
Core endurance assessment tests
The prone plank test will be used to evaluate trunk flexor endurance. For the prone plank test, participants will maintain a prone position in which their body weight is supported by the toes and forearms.
The side plank test will be performed with the participant lying on their side, supported by their foot and elbow. The side plank test will be performed on both sides. Participants will be instructed to maintain a neutral position of the spine and pelvis and breathe normally during the test. Each test will be terminated when the participant is unable to maintain posture or their pelvis moves up or down five or more cm. Each hold time will be recorded using a stopwatch.
When 1 minute is completed in both tests, chorea muscle strength will be considered sufficient.
Measured: Baseline
Weight-bearing lunge test
Weight-bearing lunge test (WBLT) is frequently used in individuals with ankle instability to determine dorsiflexion normal joint movement. During WBLT the participant puts his hands on the wall and takes one leg forward and the other leg helps balance behind. The maximum distance that the knee touches the wall is recorded without allowing the heel of the front foot to lose contact with the ground. The clinically significant value for WBLT was determined as 2.5 cm.
Measured: Baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted13 Feb 2024
- Study start30 Apr 2024
- Primary completion10 Jan 2025
- Study completion10 Jan 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Injury TraumaticStudies of the same condition, open and under way.
- 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
- Prevention
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Model description
- Participants will be divided into two groups according to the presence of frontal plane projection angle and their demographic characteristics will be compared.
- Masking
- Double blind
- Who is masked
- Participant, Outcomes assessor
- Enrolment
- 56 participants (actual)
Sponsor and investigators
- Lead sponsor
- Bahçeşehir University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Pelin Pişirici, Bahçeşehir University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06257303
- Sponsor's protocol ID
- NA-LandingB
- Status last verified
- Mar 2025
- First submitted
- 5 Feb 2024
- Last updated
- 19 Mar 2025
- 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 Mar 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Investigation of the Correlation Between Dynamic Knee Valgus and Landing Biomechanics, Core Endurance and Ankle Dorsiflexion in Adolescent Female Basketball Players
- ClinicalTrials.gov ID
- NCT06257303
- Acronym / sponsor ID
- NA-LandingB
- Conditions
- Injury Traumatic, Injury;Sports, Injury, Knee, Injury, Ankle
- Keywords
- injury preventation, frontal plane projection angle, landing error scoring system, weight bearing lunge test
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 56 participants (actual)
- Lead sponsor
- Bahçeşehir UniversityUniversity, hospital or other
- Study start
- 30 Apr 2024 (actual)
- Primary completion
- 10 Jan 2025 (actual)
- Study completion
- 10 Jan 2025 (actual)
- First posted
- 13 Feb 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.
It has been shown that especially adolescent female athletes have a very high risk of injury compared to males. Gender differences (anatomical, biomechanical, neuromuscular and hormonal differences) contribute to the increased risk of injury. Basketball, one of the sports preferred by adolescent girls, brings with it high risks of injury due to the high participation rate among team sports. The occurrence of lower extremity injuries such as anterior cruciate ligament injuries and patellofemoral pain during dynamic activities (e.g., landing, running, etc.) has been associated with dynamic knee valgus, a pattern of lower extremity malalignment. At the same time, weakness of the core muscles and inadequate ankle dorsiflexion joint range of motion also contribute to the injury. The aim of this study is to examine the correlation between landing biomechanics, core endurance and ankle dorsiflexion angle in adolescent female basketball players with dynamic knee valgus.
Detailed description
Although interest in identifying injury risk factors has increased recently, it has been stated that adolescent athletes are especially vulnerable to injury. Such sex-based differences that may explain the increased risk of anterior cruciate ligament injury in girls compared with boys include anatomical, biomechanical, neuromuscular, and hormonal differences. A broad range of physiological mechanisms (e.g., hormone control, differences in joint geometry, collagen turnover, etc.) play a role in lower extremity injuries and may explain these sex differences. Basketball, one of the sports preferred by adolescent girls, brings with it high risks of injury due to the high participation rate among team sports. As a result of the studies, it was revealed that 7 to 10 people out of every 1000 were injured. 16% of female basketball players are at risk of anterior cruciate ligament injury during their careers, and this rate is 2 to 4 times higher than that of men. The occurrence of lower extremity injuries such as anterior cruciate ligament injuries and patellofemoral pain during dynamic activities (e.g., landing, running, etc.) has been associated with dynamic knee valgus. A common malalignment that may occur in the lower extremities during sports activities is dynamic knee valgus, which has been suggested as the underlying mechanism of knee injury. Dynamic knee valgus involves a combination of knee abduction, tibial internal rotation, and hip adduction. Numerous studies associate core muscle weakness with lower extremity malalignment. Changes in the trunk-pelvis-hip complex can lead to dynamic knee valgus, a dysfunction that also appears to be influenced by factors such as gender, physical activity level, and body mass index. In post-jump landing biomechanics, limitations in ankle dorsiflexion joint range of motion are considered a modifiable injury risk factor for athletes. Ankle dorsiflexion during landing helps reduce ground reaction forces and facilitates knee and hip flexion in the sagittal plane. It has been shown that decreased ankle dorsiflexion joint range of motion limits peak flexion angles of the ankle, knee, and hip and increases peak knee abduction angles during descent. This situation shows the relationship between ankle dorsiflexion joint range of motion and frontal plane projection angle. This study aims to examine the correlation between landing biomechanics, core endurance and ankle dorsiflexion angle in adolescent female basketball players with dynamic knee valgus. It was hypothesized that participants with greater knee valgus had poor core stabilization ability and limited dorsiflexion angle.
Study design
- Primary purpose
- Prevention
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, outcomes assessor)
- Number of arms
- 2
- Model description
- Participants will be divided into two groups according to the presence of frontal plane projection angle and their demographic characteristics will be compared.
| Arm | Type | Receives |
|---|---|---|
| Valgus Group | Active comparator | Other: Frontal Plane Projection AngleIf there is an increase of 10 degrees or more in the frontal plane projection angle while squatting on one leg, the participant will be included in this group. |
| Control Group | Active comparator | Other: Frontal Plane Projection AngleIf the frontal plane projection angle is in the normal values while squatting on one leg, the participant will be included in this group. |
Who may qualify
- Ages
- 10 to 19 years
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
Key inclusion criteria (7 listed)
- Having been training basketbol for at least 6 months,
- Being between the ages of 10-19
- Being female
- Having an increase of 10 degrees or more in the frontal plane projection angle (for the valgus group)
- Having a frontal plane projection angle at normal values (for the control group)
Key exclusion criteria (8 listed)
- Non-volunteer athletes
- Having a body mass index of 30 kg/m² and above
- Having undergone lower extremity surgery
- Having chronic knee instability.
- Having had a meniscus or ligament injury
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 |
|---|---|---|
| Frontal Plane Projection AngleParticipants will stand with their feet aligned in the sagittal plane and their arms crossed across their chests. By prior instruction, subjects will be asked to squat up to 60º knee flexion in a controlled manner without losing their balance, before returning to the starting position. Digital recordings of the frontal plane will be made while individuals perform a single-leg squat test at 60º knee flexion 3 times. | Other | Control Group, Valgus Group |
Primary outcome
Landing Error Scoring System
Time frame: Baseline
The Landing Error Scoring System (LESS) is a screening tool used to identify athletes who exhibit movement patterns that pose a high risk of injury in post-jump landing biomechanics. Evaluaters will score 17 items based on movements during the jump-landing task. The overall LESS score ranges from 0 to 17 errors, with lower scores reflecting fewer landing errors. An error score of five or more indicates poor jumping technique and is associated with a higher risk of lower extremity injury. Participants will begin LESS standing on a 30 cm high box and will be asked to jump forward a distance equal to half their height (indicated by a line on the ground) and make a maximum vertical jump once they land. Participants will be provided with a verbal explanation and visual demonstration before testing and will be allowed to try the procedure until they become familiar with it. Each participant will complete 3 trials of LESS and the resulting average will be considered for analysis.
2 secondary outcomes
Core endurance assessment tests
Time frame: Baseline
Weight-bearing lunge test
Time frame: Baseline
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 19 Mar 2025.
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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?
A study testing Frontal Plane Projection Angle in people with Injury Traumatic and Injury;Sports, run by Bahçeşehir University at 1 site in Turkey (Türkiye).
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 7 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 19 Mar 2025. 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 Turkey (Türkiye). 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?
Landing Error Scoring System (time frame: Baseline). 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 Mar 2025.