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Does Midcarpal Joint Structure Affect Development of Arthritis in the Wrist
Paul Tesoriero1, Jacob Becker1, Brandon Passano1
1Department of Orthopedic Surgery, School of Medicine, New York University, New Hyde Park, New York.
Journal of Wrist Surgery
|January 16, 2023
Summary
Wrist structure significantly influences degenerative arthritis patterns. Type 2 wrists are linked to scapholunate advanced collapse (SLAC), while type 1 wrists show isolated midcarpal arthritis, aiding future prevention strategies.
Area of Science:
- Orthopedics
- Radiology
- Rheumatology
Background:
- Degenerative wrist arthritis, including scapholunate advanced collapse (SLAC), develops based on wrist structure and applied forces.
- Specific patterns like isolated scaphotrapezial trapezoid (STT) joint and midcarpal arthritis also occur.
- Wrist anatomy is a key predictor of osteoarthritis patterns.
Purpose of the Study:
- To investigate the association between midcarpal joint structure and degenerative arthritis patterns.
- To test the hypothesis that type 2 wrists predispose to SLAC degeneration.
Main Methods:
- Retrospective analysis of 195 degenerative wrist radiographs.
- Evaluation of wrist/lunate type, degeneration pattern, and various radiographic parameters.
- Assessment for arthritis in thumb carpometacarpal (CMC), STT, and midcarpal joints.
Main Results:
- A significant correlation was found between wrist type and degeneration pattern (p=0.02).
- Type 2 wrists showed a higher incidence of SLAC degeneration.
- Type 1 wrists were associated with isolated midcarpal arthritis and STT arthritis (p<0.01).
- Ulnar variance correlated with thumb CMC and STT arthritis; radial height with midcarpal arthritis.
Conclusions:
- Midcarpal joint structure is significantly related to degenerative arthritis patterns.
- Understanding these relationships aids in comprehending arthritis development.
- Findings may inform future strategies for arthritis prevention.
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