The Single Leg Squat Test to Evaluate Dynamic Knee Stability After ACLR

NCT05294783 | Completed

• 1 other identifier: 2018.134
• Study Type: observational
• Target: 43
• Locations: 1 country
• Sites: 1

Brief Summary

Patients with anterior cruciate ligament (ACL) injury often suffer knee instability, which can be visualized as a wobbling knee during weight bearing exercises, such as the single leg squat. We propose to use the single-leg-squat-and-hold (SLSH) task with kinematic analysis to objectively evaluate dynamic knee stability in ACL injured patients. The aim of this study is (1) to compare knee kinematic variations capturing knee wobbling during SLSH between ACL subjects and healthy controls; and (2) to detect the changes in knee kinematic variations during SLSH following ACL reconstruction.

Conditions

ACL Injury

Keywords

single leg squat; knee instability; ACL reconstruction; Kinematics

Outcome Measures

Primary Outcomes (6)

• Changes from baseline knee range of flexion-extension at 3 months after ACLR

  knee range of flexion-extension will be measured during 10s holding phase of the single leg squat and hold test

  three months post-operatively

• Changes from baseline knee range of varus-valgus at 3 months after ACLR

  knee range of virus-valgus will be measured during 10s holding phase of the single leg squat and hold test

  three months post-operatively

• Changes from baseline knee range of internal-external rotation at 3 months after ACLR

  knee range of internal-external rotation will be measured during 10s holding phase of the single leg squat and hold test

  one month pre-operatively and three months post-operatively

• Changes from baseline frequency of knee flexion-extension at 3 months after ACLR

  the frequency of the relative flexion-extension movements will be quantified by the number of peak appearances during 10s holding phase of the single leg squat and hold test

  three months post-operatively

• Changes from baseline frequency of knee varus-valgus at 3 months after ACLR

  the frequency of the relative varus-valgus movements will be quantified by the number of peak appearances during 10s holding phase of the single leg squat and hold test

  three months post-operatively

• Changes from baseline frequency of knee internal-external rotation

  he frequency of the relative internal-external movements will be quantified by the number of peak appearances during 10s holding phase of the single leg squat and hold test

  three months post-operatively

Secondary Outcomes (1)

• Changes from baseline International Knee Documentation Committee(IKDC) score at 3 months after ACLR

  three months post-operatively

Study Arms (1)

ACL injured patients

All the ACL injured patients recruited underwent ACL reconstruction with the same group of surgeons lead by the same chief surgeon.

Procedure: ACL reconstruction

Interventions

ACL reconstruction PROCEDURE

ACL reconstruction is a standard surgery for ACL injured patients

ACL injured patients

Eligibility Criteria

• Age: 18 Years - 35 Years
• Sex: all
• Age Groups: Adult (18-64)
• Sampling Method: Non-Probability Sample

Study Population

Elite or recreational athletes with ACL injury who suffer knee instability and require surgical reconstruction

You may qualify if:

• Aged 18-35;
• Participate in level I or level II sports with a Tegner score of more than 6 before injury(level I: sports involving jumping, cutting and pivoting, e.g.football, basketball etc; Level II: sports involving lateral movements, less pivoting than Level I eg. racket sports)
• Scheduled for ACLR because of unilateral ACL injury;
• Failure to meet any single criteria for a potential coper;
• Contralateral knee without history of injury.

You may not qualify if:

• Concomitant fracture, meniscus injury or full-thickness chondral injuries;
• preoperative radiographic signs of arthritis;
• Revision ACL surgery;
• With ankle pain, hip pain, low back pain or spine pathology;
• Woman with pregnancy.

Sponsors & Collaborators

• Chinese University of Hong Kong: lead

Study Sites (1)

The Chinese University of Hong Kong

Hong Kong, Hong Kong

Location

MeSH Terms

Conditions

Anterior Cruciate Ligament Injuries

Condition Hierarchy (Ancestors)

Knee Injuries; Leg Injuries; Wounds and Injuries

Study Officials

• Xin HE, PhD

  Chinese University of Hong Kong

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal investigator

Study Record Dates

• First Submitted: March 10, 2022
• First Posted: March 24, 2022
• Study Start: July 1, 2018
• Primary Completion: December 30, 2021
• Study Completion: December 30, 2021
• Last Updated: March 24, 2022

Record last verified: 2022-03

Data Sharing

• IPD Sharing: Will not share

Locations

HK (1)