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Clinical Trial Summary

The purpose of this study is to examine if thigh muscle weakness and the lack of muscle activation that accompanies ACL injury can be improved through a form of mental coaching and encouragement, known as operant conditioning.


Clinical Trial Description

Thigh muscle weakness is a common result after anterior cruciate ligament (ACL) injury and reconstruction surgery. Therefore, reducing thigh muscle weakness after ACL injury and reconstructive surgery is important as the quadriceps muscles act as shock absorbers that protect the knee joint. If significant weakness is present in the quadriceps, the knee is exposed to increased forces and often results in degeneration of the structures in the joint leading to osteoarthritis. Thus, it is important to investigate activation and strength rehabilitation methods for the quadriceps muscles. This research study is being done to learn if thigh muscle weakness and the lack of muscle activation that accompanies ACL injury can be improved by conditioning brain responses (elicited by non-invasive transcranial magnetic stimulation) using a form of training called as operant conditioning. ;


Study Design


Related Conditions & MeSH terms

  • Anterior Cruciate Ligament Injuries
  • Anterior Cruciate Ligament Injury

NCT number NCT03209531
Study type Interventional
Source University of Michigan
Contact Chandramouli Krishnan, PhD
Phone 734.936.4031
Email mouli@umich.edu
Status Recruiting
Phase N/A
Start date September 21, 2017
Completion date September 2026

See also
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Completed NCT02530333 - Differential Biomechanical Effects of an ACL Injury Prevention Program in Women's Basketball and Soccer Players N/A
Active, not recruiting NCT02111759 - The Effect of Knee Flexion Angle for Graft Fixation During Single-Bundle Anterior Cruciate Ligament Reconstruction N/A
Completed NCT03473873 - Protective Role of Muscle Function for Early Features of Knee Osteoarthritis After Anterior Cruciate Ligament Injury
Active, not recruiting NCT03473821 - Motor Imagery to Facilitate Sensorimotor Relearning After ACL Injury N/A