Vastus Medialis Activation During McMurray's Test

Muscle Activation Patterns During the McMurray's Test for Knee Examination

Status

UNKNOWN

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT05965804

Enrollment

Registered

2023-07-28

Start date

2023-07-25

Completion date

2023-12-01

Last updated

2023-07-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Electromyography, Knee Injuries, Knee Pain Chronic

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.

Interventions

DIAGNOSTIC_TESTMcMurray knee examination test

The McMurray test will be performed in different knee flexion and rotation angles.

Study design

Observational model

OTHER

Time perspective

CROSS_SECTIONAL

Eligibility

Sex/Gender

ALL

Age

18 Years to 45 Years

Healthy volunteers

Yes

Inclusion criteria

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

Exclusion criteria

* Contraindications to EMG * Neurological or muscular disorders

Design outcomes

Primary

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

Secondary

Measure	Time frame	Description
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).

Countries

Egypt

Contacts

Primary ContactMohamed M ElMeligie

mohamed.elmeligie@acu.edu.eg+201064442032

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026