Vastus Medialis Activation During McMurray's Test

Recruiting

• Conditions: Electromyography; Knee Injuries; Knee Pain Chronic

• Registration Number: NCT05965804
• Lead Sponsor: Ahram Canadian University

Brief Summary

This study will use electromyography to evaluate activation patterns of the vastus medialis and vastus lateralis muscles during the McMurray's knee examination test in different knee positions.

Detailed Description

The McMurray test is commonly used to assess knee pathology. However, it is unclear which knee position during this test best isolates activity of the vastus medialis muscle. This study will measure vastus medialis and lateralis activation using surface electromyography in 30 healthy participants performing the McMurray test. Different knee flexion and rotation angles will be evaluated to determine which position optimally activates the vastus medialis. Results may enhance utilization of the McMurray test in rehabilitation programs targeting this muscle.

Study Timeline

• Status Verified: 2023-07
• Study First Submitted: 2023-07-20
• Study First Submitted QC: 2023-07-20
• Last Update Submitted: 2023-07-20
• Study Start: 2023-07-25
• Study First Posted: 2023-07-28
• Last Update Posted: 2023-07-28
• Primary Completion: 2023-11-25
• Study Completion: 2023-12-01

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 30

Inclusion Criteria

• Healthy adults aged 18-45 years
• No history of knee pathology

Exclusion Criteria

• Contraindications to EMG
• Neurological or muscular disorders

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Vastus Medialis Activation	Baseline	Mean EMG activity of the vastus medialis during McMurray test at different knee positions. Measured in microvolts (μV).

Secondary Outcome Measures

Name	Time	Method
Vastus lateralis EMG activity during McMurray test (μV)	baseline	Mean EMG activity of the vastus lateralis muscle during the McMurray knee examination test at different knee flexion and rotation angles. Measured in microvolts (μV).
Force exerted during McMurray test measured by dynamometer (Newtons)	baseline	Maximum voluntary isometric knee extension force measured using a handheld dynamometer during the McMurray knee examination test at different knee positions. Measured in Newtons (N).

Trial Locations

Locations (1)

Outpatient clinic of faculty of physical therapy, Ahram Canadian University; 🇪🇬 Al Ḩayy Ath Thāmin, Giza, Egypt