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Published on: December 10, 2021
Extensor tendon injuries: acute management and secondary reconstruction
Kevin R Hanz1, Michel Saint-Cyr, Maynard J Semmler
1Dallas, Texas From the Department of Plastic Surgery, University of Texas Southwestern Medical Center, and the Parkland Health and Hospital System.
Plastic and Reconstructive Surgery
|March 5, 2008
Summary
Understanding the intricate anatomy and function of the hand
Area of Science:
- Orthopedics
- Hand Surgery
- Anatomy
Background:
- Finger extension involves complex interplay between intrinsic and extrinsic muscle systems.
- Extrinsic extensors (radial nerve) and intrinsic muscles (median/ulnar nerves) have distinct roles.
- Understanding this balance is crucial for managing extensor tendon injuries.
Purpose of the Study:
- To describe extensor tendon anatomy in the forearm, wrist, hand, and fingers.
- To recognize anatomical variations.
- To master hand examination for acute extensor tendon injuries and outline repair techniques for acute and delayed management.
Main Methods:
- Review of extensor tendon anatomy.
- Discussion of hand examination techniques for extensor tendon injuries.
- Delineation of surgical repair strategies.
Main Results:
- Detailed description of extrinsic extensor muscles (extensor digitorum communis, extensor indicis proprius, extensor digiti quinti) and their function.
- Explanation of intrinsic muscle roles (interossei, lumbricals) in finger extension and joint control.
- Identification of potential compensation by intrinsic muscles in cases of extrinsic extensor deficits.
Conclusions:
- Effective management of extensor tendon injuries requires a thorough understanding of both extrinsic and intrinsic extensor systems.
- Anatomical knowledge and examination skills are vital for accurate diagnosis and treatment planning.
- Surgical repair techniques for acute and delayed presentations are essential for restoring function.
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