Hip Abductor Function During Trendelenburg Test

Recruiting

• Conditions: Weakness, Muscle
• Interventions: Diagnostic Test: Trendelenburg hip abduction test

• Registration Number: NCT05967611
• Lead Sponsor: Ahram Canadian University

Brief Summary

This study will use electromyography and dynamometry to evaluate gluteal muscle activation during the Trendelenburg hip abduction test in different hip positions.

Detailed Description

The Trendelenburg test is commonly used to assess hip abductor weakness. However, it is unclear which hip position during this test best isolates gluteal muscle function. This study will measure gluteus medius and minimus activation and hip abduction force in 30 healthy participants performing the Trendelenburg test. Different hip flexion, extension, adduction and abduction angles will be evaluated to determine which position optimally targets the gluteal muscles. Results may enhance utilization of the Trendelenburg test in clinical practice.

Study Timeline

• Status Verified: 2023-07
• Study First Submitted: 2023-07-21
• Study First Submitted QC: 2023-07-21
• Last Update Submitted: 2023-07-21
• Study Start: 2023-07-25
• Study First Posted: 2023-08-01
• Last Update Posted: 2023-08-01
• Primary Completion: 2023-12-20
• Study Completion: 2023-12-28

Recruitment & Eligibility

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

Inclusion Criteria

• Healthy adults aged 18-45 years
• No history of hip disorders

Exclusion Criteria

• Contraindications to EMG
• Neurological or muscular disorders

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Healthy Adults	Trendelenburg hip abduction test	At least 30 healthy adult participants aged 18-45 years performing the Trendelenburg hip abduction test

Primary Outcome Measures

Name	Time	Method
Gluteus Medius Activation	Baseline	Mean EMG activity of the gluteus medius during the Trendelenburg test at different hip positions. Measured bilaterally in microvolts (μV).

Secondary Outcome Measures

Name	Time	Method
Gluteus Minimus Activation during Trendelenburg Test	Baseline	Mean muscle activation amplitude (measured in microvolts, μV) of the gluteus minimus during the Trendelenburg hip abduction test across a range of hip flexion, extension, adduction and abduction angles from 0 to 45 degrees. Measured bilaterally using surface electromyography electrodes placed on the muscle belly of the gluteus minimus.
Hip Abduction Strength during Trendelenburg Test	Baseline	Maximum voluntary isometric hip abduction strength (measured in Newtons, N) during the Trendelenburg hip abduction test maneuver. Measured bilaterally at each combination of hip flexion, extension, adduction and abduction angles using a stabilized handheld dynamometer placed just proximal to the lateral femoral condyle.

Trial Locations

Locations (1)

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