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Thomas Test

Thomas Test is designed to test the flexibility of the iliopsoas complex.

To perform the test the patient lies supine while the therapist checks for excessive lordosis, which may be usually present with tight hip flexors. 

Hip muscles
Hip muscles

The therapist flexes one of the patient’s hips, bringing the knee to the chest to flatten out the lumbar spine and to stabilize the pelvis.

The patient holds the flexed hip against the chest.

If there is no flexion contracture, the hip being tested (the straight leg) remains on the examining table. If a contracture is present, the patient’s straight leg rises off the table and a muscle stretch end feel will be felt. The angle of contracture can be measured.