Relationship Between Knee Valgus and Landing Biomechanics

NCT06257303 | Completed

• 1 other identifier: NA-LandingB
• Study Type: interventional
• Target: 56
• Locations: 1 country
• Sites: 1

Brief 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. 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.

Conditions

Injury Traumatic; Injury;Sports; Injury, Knee; Injury, Ankle

Keywords

injury preventation; frontal plane projection angle; landing error scoring system; weight bearing lunge test

Outcome Measures

Primary Outcomes (1)

• 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.

  Baseline

Secondary Outcomes (2)

• Core endurance assessment tests

  Baseline

• Weight-bearing lunge test

  Baseline

Study Arms (2)

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.

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.

Other: Frontal Plane Projection Angle

Interventions

Frontal Plane Projection Angle OTHER

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.

Control Group; Valgus Group

Eligibility Criteria

• Age: 10 Years - 19 Years
• Sex: female
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64)

You may qualify if:

• 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

You may not qualify if:

• 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.

Sponsors & Collaborators

• Bahçeşehir University: lead

Study Sites (1)

Bahcesehir University

Istanbul, 34353, Turkey (Türkiye)

Location

MeSH Terms

Conditions

Wounds and Injuries; Athletic Injuries; Knee Injuries; Ankle Injuries

Condition Hierarchy (Ancestors)

Leg Injuries

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NON RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, OUTCOMES ASSESSOR
• Masking Details: Participants will be blinded to the purpose of the study. In this way, it is planned to prevent them from making corrections in their alignment or posture. The evaluator will also be blind to the groups. After the frontal plane projection angle measurement, it will be determined which group the participant will be in. Still, this information will not be shared with the evaluator who makes other evaluations.
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Assistant Professor, PT, PhD

Model Details: Participants will be divided into two groups according to the presence of frontal plane projection angle and their demographic characteristics will be compared.

Study Record Dates

• First Submitted: February 5, 2024
• First Posted: February 13, 2024
• Study Start: April 30, 2024
• Primary Completion: January 10, 2025
• Study Completion: January 10, 2025
• Last Updated: March 19, 2025

Record last verified: 2025-03

Locations

TU (1)