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Brachial neuritis following a corticosteroid injection.
Matthew Robinson1, Mark Fulcher
1Unisports Sports Medicine, Auckland, New Zealand.
BMJ Case Reports
|March 6, 2014
Summary
Subacromial corticosteroid injections may trigger brachial neuritis, leading to persistent anterior interosseous neuropathy. This case highlights the need to consider injections as a potential cause of brachial plexus injuries.
Area of Science:
- Neurology
- Orthopedic Surgery
- Pain Management
Background:
- Brachial neuritis is an idiopathic condition affecting the brachial plexus.
- Subacromial corticosteroid injections are commonly used for shoulder pain.
Observation:
- A patient developed anterior interosseous neuropathy after a subacromial corticosteroid injection.
- No other trigger for the neuropathy was identified.
Findings:
- The anterior interosseous nerve, part of the brachial plexus, was affected.
- The neuropathy showed no recovery after two years.
Implications:
- Corticosteroid injections should be considered a potential cause of brachial neuritis.
- Brachial neuritis must be included in the differential diagnosis for severe arm pain and weakness.
- The anterior interosseous nerve is implicated in a significant portion of brachial neuritis cases.
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