While ulnar nerve compression most commonly occurs at the elbow, it can rarely be seen at the wrist level. At the wrist, the ulnar nerve passes through the Guyon’s Canal.

Masses, adhesions, fractures near the canal, repetitive trauma (such as in individuals using heavy machinery), rheumatic diseases, or thrombosis/aneurysm of the ulnar artery, which accompanies the nerve through the canal, may lead to compression of the ulnar nerve.

Diagnosis is made through careful physical examination and EMG (electromyography).

Treatment includes:

• Use of splints
• Anti-inflammatory medications
• Pressure-relieving gloves
• If these conservative methods are unsuccessful, surgical intervention is recommended.