Which test assesses Achilles tendon rupture by squeezing the calf and observing plantarflexion of the foot?

• A. Homan's sign
• B. Tinels sign
• C. Thompson's test
• D. Kleiger's test

Answer: (C)

This test evaluates the integrity of the Achilles tendon by checking the response of the gastrocnemius-soleus muscle group when the calf is squeezed. When you squeeze the calf, a normal, intact Achilles tendon allows the foot to plantarflex because the muscle contraction is transmitted through the tendon. If the Achilles tendon is ruptured, that connection is lost and the foot fails to plantarflex in response to the squeeze. This direct assessment makes it the best choice for detecting a rupture.

In other scenarios, a partial tear might show diminished plantarflexion rather than a complete absence, which is why this test is particularly useful for distinguishing a full rupture versus an intact tendon. Other signs listed pertain to different conditions—Homan's sign relates to deep vein thrombosis, Tinel's sign to nerve irritation, and Kleiger's test to ankle ligaments—so they do not assess the Achilles tendon rupture in the same direct way.