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Scapholunate instability: current concepts in diagnosis and management
Christina E Kuo1, Scott W Wolfe
1Hand and Upper Extremity Service, The Hospital for Special Surgery, New York, NY 10021, USA.
The Journal of Hand Surgery
|July 29, 2008
Summary
Scapholunate joint injuries cause carpal instability and wrist dysfunction. Early intervention for scapholunate ligament tears can restore normal mechanics and prevent degenerative changes.
Area of Science:
- Orthopedic Surgery
- Sports Medicine
- Anatomy
Background:
- Scapholunate joint injuries are the leading cause of carpal instability.
- These injuries result in significant wrist dysfunction, impacting daily activities and work.
- The wrist's complex structure relies on ligaments to maintain stability.
Purpose of the Study:
- To review the anatomy, kinematics, and biomechanics of the scapholunate articulation.
- To understand the spectrum of scapholunate ligament instability.
- To propose a treatment algorithm for scapholunate instability.
Main Methods:
- Literature review of scapholunate joint anatomy, biomechanics, and injury patterns.
- Analysis of kinematic data and ligamentous hierarchy.
- Development of a treatment algorithm based on injury stage and severity.
Main Results:
- Isolated scapholunate interosseous ligament injuries can lead to progressive joint degeneration.
- Restoring ligament continuity and carpal kinematics is key to treatment.
- Treatment should be tailored to injury stage, secondary damage, and arthritis.
Conclusions:
- Scapholunate ligament injuries require careful management to prevent long-term dysfunction.
- A staged treatment approach is essential for optimal outcomes.
- Understanding the biomechanics is crucial for effective intervention.
