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This condition is frequently associated with carpal tunnel syndrome and involves compression of the ulnar nerve by the same fibrous band that compresses the median nerve (the transverse carpal ligament).
Rarely, the condition may occur independently without median nerve involvement or may be misdiagnosed as compression of the same nerve at other locations (elbow, cervical spine).
Symptoms include pain and tingling in the little finger and sometimes in half of the fourth finger.
A common cause of Guyon’s canal syndrome in the modern world is the flexed position of the hand(s) while using a smartphone.
Surgical treatment aims to decompress the nerve through a minimal incision above Guyon’s canal (at the wrist).
When associated with carpal tunnel syndrome, both nerves can be decompressed through a single minimally invasive incision (under 1 cm).
The ulnar nerve is one of the most important nerves of the hand.
Under certain conditions, it can also be compressed at the elbow level.
This condition is called cubital tunnel syndrome. Symptoms include tingling and pain that starts from the inner region of the elbow and extends to the last two fingers of the hand.
It may be accompanied by partial or near-total loss of sensation.
Among the necessary investigations, musculoskeletal ultrasound and nerve conduction studies may also be recommended.
Common causes of this condition include prolonged resting of the elbow on hard surfaces, prolonged flexed positions of the elbow, thyroid disorders, diabetes mellitus, elbow trauma near the nerve passage area, and others.
