Ulnar Nerve Entrapment in Guyon Canal

What is Ulnar Nerve Entrapment in Guyon Canal?

This condition involves compression of the ulnar nerve as it passes through Guyon’s canal at the wrist.

• Results in pain, numbness, and weakness in the hand
• Often affects athletes or manual laborers

Overview of the Condition

Symptoms are caused by nerve compression leading to sensory and motor deficits in the ulnar nerve distribution.

Symptoms

• Numbness in the ring and little fingers
• Weakness in hand grip
• Pain at the wrist

Causes

Repetitive pressure, trauma, or anatomical variations can lead to compression of the ulnar nerve in Guyon’s canal.

Diagnosis

Diagnosis is made using clinical examination, nerve conduction studies, and sometimes imaging.

Treatment Options

• Activity modification and splinting
• NSAIDs and corticosteroid injections
• Surgical decompression if conservative measures fail

Conservative Management

Initial treatment includes rest, wrist splinting, and anti-inflammatory medications.

Rehabilitation Exercises

1. Wrist and forearm stretching
2. Strengthening exercises for hand muscles
3. Nerve gliding exercises

Surgical Options

Surgical decompression of Guyon’s canal may be performed if symptoms persist.

Anatomy Overview

Guyon’s canal is a narrow passage at the wrist through which the ulnar nerve travels.

Affected Areas

• Wrist, particularly the ulnar side
• Hand (ulnar nerve distribution)

Frequently Asked Questions

QuestionAnswerWhat causes Guyon canal syndrome?Repetitive pressure or trauma may compress the ulnar nerve.Is surgery often required?Surgery is reserved for cases unresponsive to conservative treatment.

Prevention Strategies

• Avoid prolonged wrist pressure
• Use ergonomic supports
• Take breaks during repetitive tasks

Related Conditions

• Cubital tunnel syndrome
• Carpal tunnel syndrome

Additional Treatments

Physical therapy may complement treatment to improve function.