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Bilateral symptomatic supernumerary muscle belly syndrome
Yukio Abe1, H Kirk Watson, Alan Babigian
1Department of Orthopaedic Surgery, Ogori Daiichi General Hospital, Yamaguchi, Japan.
Summary
A woman experienced chronic forearm pain and limited finger mobility due to anomalous reversed forearm muscles. Surgical resection of these abnormal muscles successfully resolved her long-standing symptoms.
Area of Science:
- Anatomy
- Orthopedic Surgery
- Pain Management
Background:
- Chronic forearm pain and functional limitation can significantly impact quality of life.
- Reflex sympathetic dystrophy is a potential diagnosis for complex regional pain syndromes.
- Congenital anatomical variations can present with unusual symptoms.
Observation:
- A 32-year-old female presented with a 18-year history of bilateral forearm pain and inability to open fingers.
- Physical examination revealed distal volar forearm fullness and tenderness, with positive results on the quadriga test.
- Symptoms were initially managed as reflex sympathetic dystrophy.
Findings:
- Intraoperative findings confirmed anomalous, reversed forearm muscles in both forearms.
- Surgical resection of the anomalous muscles was performed bilaterally.
Implications:
- Anatomical variations, such as reversed forearm muscles, should be considered in cases of chronic forearm pain and dysfunction.
- Surgical intervention can be effective in treating symptoms caused by structural anomalies.
- This case highlights the importance of thorough diagnostic evaluation for complex musculoskeletal conditions.