Thompson test

Thompson test is a physical examination procedure used to diagnose a rupture of the Achilles tendon. The test is named after Dr. Robert William Thompson, who first described it.

Procedure

The Thompson test is performed with the patient lying face down with feet hanging over the edge of the bed. The examiner then squeezes the calf muscle. This action should cause the foot to plantar flex (point downwards) as the Achilles tendon is still connected. If the foot does not plantar flex, a positive Thompson test indicates a likely rupture of the Achilles tendon.

Interpretation

A positive Thompson test suggests a rupture of the Achilles tendon. However, a negative test does not completely rule out a rupture. Other tests and imaging may be needed to confirm the diagnosis.

Limitations

The Thompson test has some limitations. It may not be accurate in patients who have undergone previous Achilles tendon surgery. Additionally, the test may not be reliable in patients with partial Achilles tendon tears.

See also

• Achilles tendon rupture
• Physical examination

References

Thompson test Resources
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