17/05/2026
#손목통증 #노원역한의원 #노원한의원 #전문의진료 #노원역야간진료
🖐️ When numbness, tingling, or weakness appears in the ring and little fingers due to a nerve being compressed at the wrist, it may be a condition called Guyon’s Canal Syndrome.
🩺 Guyon’s Canal Syndrome
Guyon’s canal syndrome is a nerve compression disorder affecting the ulnar nerve as it passes through a tunnel (Guyon’s canal) at the wrist.
👉 Medical term: Ulnar tunnel syndrome (Guyon canal entrapment)
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🔹 Location
• Wrist (ulnar side / little finger side)
• Guyon’s canal between wrist bones and ligament
• Affects hand and fingers
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🔹 What Does It Do?
• The ulnar nerve controls sensation and fine movements of hand
• In Guyon’s canal syndrome, the nerve gets compressed
• This disrupts signals to the ring and little fingers
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⚠️ Common Symptoms
• Numbness or tingling in ring and little finger
• Weak grip strength
• Difficulty holding objects
• Hand pain or discomfort at wrist
• Muscle wasting in severe cases
• Clawing of fingers (advanced cases)
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🧠 How It Happens
• Ulnar nerve gets trapped in Guyon’s canal
• Pressure damages nerve function
• Signal transmission to hand muscles becomes impaired
• Symptoms may progress over time
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🧾 Common Causes & Risk Factors
• Repetitive wrist pressure (cycling, typing)
• Wrist trauma or fractures
• Ganglion cysts
• Prolonged use of tools or handlebars
• Poor wrist posture
• Diabetes (nerve vulnerability)
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🚨 Possible Complications
• Permanent nerve damage if untreated
• Hand weakness
• Loss of fine motor skills
• Muscle wasting in hand
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🩺 Diagnosis
• Physical examination
• Nerve conduction studies (NCS)
• EMG (electromyography)
• Ultrasound or MRI (to detect compression)
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💊 Treatment Options
• Rest and activity modification
• Wrist splints
• Anti-inflammatory medications
• Physical therapy
• Nerve decompression surgery (severe cases)
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🛡️ Tips for Prevention & Care
• Avoid prolonged wrist pressure
• Use ergonomic hand positioning
• Take breaks during repetitive work
• Maintain proper cycling/typing posture
• Early treatment of wrist injuries
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🚨 Important Note
Early treatment improves recovery. Delayed care may lead to permanent nerve weakness.
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