How to Perform the Thomas test to achieve Reliable & Consistent Results

This, in my humble opinion, is the best way to perform the Thomas Test, which aims to assess the degree of passive hip extension.

The test is pretty much useless unless you position the pelvis in a consistent position.

Here Rob Granter shows a simple yet effective method of achieving this consistent position.

Ideally we want to see at least 10 degrees of hip extension.

You also want to see the femur “dropping” straight down in the saggital plane.

If the femur deviates laterally, palpate to identify the soft tissue responsible for this, usually the Tensor fascia Lata &/or its surrounding fascia.