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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.
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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Healthy Adults | 30 healthy adult participants aged 18-45 years performing the McMurray knee examination test |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| McMurray knee examination test | Diagnostic Test | The McMurray test will be performed in different knee flexion and rotation angles. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Vastus Medialis Activation | Mean EMG activity of the vastus medialis during McMurray test at different knee positions. Measured in microvolts (μV). | Baseline |
| Measure | Description | Time Frame |
|---|---|---|
| Vastus lateralis EMG activity during McMurray test (μV) | 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). | baseline |
| Force exerted during McMurray test measured by dynamometer (Newtons) |
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Inclusion Criteria:
Exclusion Criteria:
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Healthy men and women aged 18-45 recruited from the local community.
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Mohamed M ElMeligie | Contact | +201064442032 | mohamed.elmeligie@acu.edu.eg |
| Name | Affiliation | Role |
|---|---|---|
| Amal Fawzy, Ph.d | Faculty of Physical Therapy, Ahram Canadian University | Study Chair |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Outpatient clinic of faculty of physical therapy, Ahram Canadian University | Recruiting | Al Ḩayy Ath Thāmin | Giza Governorate | 3221405 | Egypt |
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| ID | Term |
|---|---|
| D007718 | Knee Injuries |
| ID | Term |
|---|---|
| D007869 | Leg Injuries |
| D014947 | Wounds and Injuries |
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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). |
| baseline |