Thompson Test | Rationale & Interpretation

The video tutorial explains the Thompson test, a diagnostic tool for Achilles tendon ruptures. It details the procedure, where the patient lies prone with feet dangling, and the examiner squeezes the gastrocnemius to observe plantar flexion. A lack of movement indicates a positive test, suggesting a complete rupture. The test's psychometrics show high specificity and sensitivity. The video also discusses interpreting results for partial ruptures, which may still show movement but can be painful.

What is the primary purpose of the Thompson test?

• To evaluate the range of motion in the knee

• To measure the strength of the gastrocnemius muscle

• To diagnose a rupture of the Achilles tendon

• To assess the flexibility of the ankle joint

What does a positive Thompson test indicate?

• Normal plantar flexion

• Partial rupture of the Achilles tendon

• Complete rupture of the Achilles tendon

• Increased ankle flexibility

What is the specificity of the Thompson test?

• 96%

• 85%

• 93%

• 90%

How can a grade two strain of the Achilles tendon be identified using the Thompson test?

• No movement and no pain

• Movement without pain

• Movement with pain

• No movement with pain

What might pain during the Thompson test suggest in the context of partial ruptures?

• A complete rupture

• A misdiagnosis

• A normal tendon

• A grade one or two strain