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Flexor pulley system: anatomy, injury, and management
Brian Zafonte1, Dora Rendulic1, Robert M Szabo1
1Department of Orthopaedic Surgery, University of California, Davis, Sacramento, CA.
The Journal of Hand Surgery
|December 3, 2014
Summary
Flexor pulley injuries, once mainly seen in climbers, are increasing in nonclimbers. New understanding challenges the dogma of preserving all pulleys, suggesting partial excision can aid treatment.
Area of Science:
- Orthopedics
- Hand Surgery
- Sports Medicine
Background:
- Flexor pulley injuries are common in rock climbers but increasingly reported in nonclimbers.
- Corticosteroid use for stenosing tenosynovitis can lead to pulley rupture.
- Recent advancements are reshaping the understanding of the flexor pulley system.
Purpose of the Study:
- To review recent developments in flexor pulley system understanding and treatment.
- To highlight evolving surgical approaches for flexor tendon injuries.
Main Methods:
- Review of current literature and surgical practices regarding flexor pulley injuries.
- Analysis of new anatomical findings and treatment strategies.
Main Results:
- The thumb pulley system is now understood to have four components, not three.
- Partial excision or venting of A2 and/or A4 pulleys is a viable treatment for zone II flexor tendon injuries.
- This challenges the traditional belief in the absolute necessity of intact A2 and A4 pulleys.
Conclusions:
- The understanding of the flexor pulley anatomy and function is evolving.
- Surgical management of flexor pulley injuries, particularly in zone II, is becoming more nuanced.
- New approaches may improve outcomes for patients with flexor pulley injuries.
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