Achilles Tendon Rupture
Diagnosis

Other less serious causes of pain in the back of the lower leg include Achilles tendonitis or bursitis. To distinguish between these possibilities, your physician will take a thorough history and examine your lower leg to look for signs of a rupture. The presence of a defect in the tendon that can be felt, evidence of weakness with plantarflexion, and a history consistent with Achilles tendon rupture are usually sufficient for diagnosis. Your physician may also perform a "Thompson test," which consists of squeezing the calf muscles of the affected leg. With an intact Achilles tendon, the foot will bend downward; however, with a complete rupture of the tendon, the foot will not move. In cases where the diagnosis is equivocal, your physician may order an MRI of the leg to diagnose a rupture of the Achilles tendon.