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Radioscapholunate arthrodesis using low-profile dorsal pi plate
Elkin J Galvis1, Kannan K Kumar, Tuna Özyurekoglu
1Kleinert and Kutz Hand Care Center, Christine M. Kleinert Institute for Hand and Microsurgery, Louisville, KY 40202, USA.
Techniques in Hand & Upper Extremity Surgery
|May 22, 2013
Summary
This study introduces a dorsal Pi plate technique for radioscapholunate arthrodesis, effectively treating wrist arthritis and carpal instability. The method achieves rigid fixation, preserving wrist motion and eliminating nonunion complications.
Area of Science:
- Orthopedic Surgery
- Hand and Wrist Surgery
- Skeletal Reconstruction
Background:
- Radioscapholunate arthrodesis is indicated for radiolunate arthritis and carpal instability.
- Previous methods struggled with achieving rigid fixation, leading to high nonunion rates.
- Maintaining midcarpal joint integrity is crucial for wrist function.
Purpose of the Study:
- To describe a novel dorsal technique for radioscapholunate arthrodesis using a low-profile locking Pi plate.
- To evaluate the efficacy and outcomes of this technique in patients with specific wrist conditions.
Main Methods:
- A dorsal approach was utilized for radioscapholunate joint arthrodesis.
- A low-profile locking Pi plate was applied to the scaphoid, lunate, and radius.
- The technique involved specific screw placements for rigid fixation and compression.
- Retinacular flaps were employed to protect the extensor tendons.
Main Results:
- The Pi plate technique offered an easier surgical approach with improved joint visualization.
- Rigid fixation was achieved, preventing nonunion and delayed union in all cases.
- Patients retained approximately 50% of their wrist range of motion.
- The technique was successfully applied to patients with lunate fossa arthritis and ulnar carpal translocation.
Conclusions:
- The dorsal Pi plate technique provides a reliable and effective method for radioscapholunate arthrodesis.
- This approach ensures rigid fixation, preserves wrist function, and avoids complications like nonunion.
- It represents an advancement in treating specific radiocarpal pathologies.
