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Double-entrapment radial tunnel syndrome
The Journal of Hand Surgery
|July 1, 1983
Summary
This study describes double-level entrapment of the posterior interosseous nerve, a branch of the radial nerve. This nerve can be compressed at its entrance, exit, or multiple sites within the supinator muscle.
Area of Science:
- Orthopedic Surgery
- Neurology
- Anatomy
Background:
- Posterior interosseous nerve (PIN) entrapment is a known cause of forearm pain and weakness.
- The radial nerve and its branches are crucial for motor function in the upper limb.
Observation:
- A symptomatic double-level entrapment of the posterior interosseous nerve was identified.
- Compression occurred at the nerve's entrance into the supinator muscle, a common site.
- Additional compression was noted at the nerve's exit from the supinator muscle, indicating a multi-level entrapment.
Findings:
- The posterior interosseous nerve can be entrapped at multiple levels within the supinator muscle.
- Double-level entrapment presents a more complex scenario than single-level compression.
- This anatomical finding highlights potential variations in PIN neuropathy.
Implications:
- Understanding multi-level PIN entrapment is crucial for accurate diagnosis and effective surgical treatment.
- This expands the differential diagnosis for posterior interosseous nerve syndrome.
- Further research may elucidate the specific mechanisms leading to double-level entrapment.