Tinel's Sign at the Ankle: Checking for Tarsal Tunnel Syndrome

Tinel's Sign at the ankle is a neurological test used to assess for Tarsal Tunnel Syndrome. It involves percussing the posterior tibial nerve to detect irritation or compression.

1. Purpose

The primary purpose of Tinel's Sign at the ankle is to **test for** Tarsal Tunnel Syndrome. This condition involves the compression or irritation of the Posterior Tibial Nerve as it passes through the tarsal tunnel on the medial side of the ankle.

2. How to Perform

1. The patient is positioned in sitting or supine.
2. The examiner locates the medial malleolus (the inner ankle bone).
3. The examiner locates the path of the posterior tibial nerve, which runs just inferior and posterior to the medial malleolus.
4. The examiner gently but firmly taps over this area with a finger or reflex hammer.

3. Positive & Negative Sign

Positive Sign (Test is POSITIVE):
A positive test (indicating nerve irritation) is:

• Reproduction of tingling, paresthesia ("pins and needles"), or pain radiating into the foot (soles or toes).

Negative Sign (Test is NEGATIVE):
A negative test is the absence of any neurological symptoms upon tapping.