Thomas Test Special Test

What is it used for?

• Assessing Hip Flexor Contracture (tightness of Iliopsoas, Rectus Femoris, or TFL).

How to Perform

• Position: Patient lies supine at the edge of the table.
• Action: Patient pulls one knee to the chest to flatten the lumbar spine. The other leg hangs free.
• Observation: Observe if the straight leg rises off the table.

Interpretation of Results

• Positive (Tight Iliopsoas): The thigh lifts off the table.
• Positive (Tight Rectus Femoris): The knee extends (straightens) instead of hanging at 90°.
• Positive (Tight TFL): The leg abducts or internally rotates.

Diagnostic Accuracy

• Sensitivity: 31%
• Specificity: 57%

References

• Magee, D. J. (2021). Orthopedic Physical Assessment.