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The natural progression of scaphoid instability
H K Watson1, J Weinzweig, J Zeppieri
1Connecticut Combined Hand Service, Hartford Hospital, USA.
Hand Clinics
|February 1, 1997
Summary
Repeated wrist sprains can injure the scapholunate ligament, leading to scaphoid instability and potentially SLAC wrist. Understanding wrist anatomy is key for diagnosing and managing these conditions effectively.
Area of Science:
- Orthopedic Surgery
- Anatomy
- Biomechanics
Background:
- Scapholunate ligament injuries are more common than previously thought after wrist sprains.
- These injuries can lead to abnormal scaphoid movement (scaphoid skid) under load.
- This can result in a clinical entity known as DISI (Dorsal Intercalated Segmental Instability).
Purpose of the Study:
- To highlight the commonality of scapholunate ligament injury from wrist sprains.
- To describe the spectrum of scaphoid instability.
- To emphasize the importance of anatomical understanding for diagnosis and management.
Main Methods:
- Review of relevant anatomical and clinical literature.
- Discussion of the spectrum of scaphoid instability, from asymptomatic findings to SLAC wrist.
- Correlation of anatomical derangements with clinical presentation and degenerative changes.
Main Results:
- Scapholunate ligament injury is a frequent consequence of wrist sprains, causing scaphoid instability.
- Scaphoid instability exists on a spectrum, impacting diagnosis and treatment.
- Degenerative changes, including SLAC wrist, can ultimately result from chronic instability.
Conclusions:
- Accurate diagnosis and management of wrist disorders depend on understanding normal and abnormal periscaphoid anatomy.
- Knowledge of anatomical derangements aids in predicting degenerative changes.
- This understanding guides the selection of appropriate treatments, from conservative measures to surgical reconstructions.