Overview
This lecture explains how to perform and interpret the Thomas Test for detecting hip flexor contractures, with focus on test procedures and key findings.
Performing the Thomas Test
- Have the patient lie in a supine (face up) position.
- Check for excessive lumbar lordosis (inward curve of the lower back) as it may indicate a tight iliopsoas muscle.
- Instruct the patient to pull one knee up to their chest and hold it.
- Ask the patient if they feel a stretch in the groin area.
Interpreting the Results
- A positive test is indicated when the extended leg lifts off the table, suggesting a hip flexor contracture.
- Measure the angle at the knee of the extended leg as a reference point.
- If the extended leg does not lift off but abducts (moves outward), this is called the J-Sign and suggests a tight iliotibial band.
Key Terms & Definitions
- Thomas Test — a physical exam used to identify hip flexor contractures.
- Lumbar Lordosis — excessive inward curvature of the lower spine.
- Iliopsoas — a major hip flexor muscle.
- J-Sign — abduction of the extended leg during the test, indicating a tight iliotibial band.
- Hip Flexor Contracture — shortening or stiffness of muscles that flex the hip.
Action Items / Next Steps
- Practice performing the Thomas Test on a peer.
- Review the Rectus Femoris Contracture Test and other related assessment videos.