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Palmar lunate dislocation with a dorsal scaphoid fracture variant
1University of Texas Medical Branch, Division of Orthopaedic Surgery (G-92), Galveston 77550.
The Journal of Hand Surgery
|May 1, 1988
Summary
This report details a rare wrist injury combining a proximal scaphoid pole fracture and a palmar lunate dislocation. The injury likely results from a specific impact mechanism involving the distal radius.
Area of Science:
- Orthopedic Surgery
- Traumatology
- Anatomy
Background:
- Wrist injuries are common in young adults.
- Scaphoid fractures and lunate dislocations are significant injuries.
- Combinations of these injuries are rare.
Observation:
- A 20-year-old male presented with a unique wrist injury.
- The injury involved a dorsally displaced proximal pole scaphoid fracture.
- An ipsilateral palmar lunate dislocation was also present.
Findings:
- This specific combination of scaphoid fracture and lunate dislocation has not been previously documented.
- The proposed pathomechanics involve a shear fracture of the scaphoid's proximal pole.
- The distal radius's dorsal lip is implicated as the causative agent during injury transition.
Implications:
- This case expands the understanding of complex wrist biomechanics.
- It highlights the importance of recognizing rare injury patterns in trauma.
- Accurate diagnosis is crucial for appropriate orthopedic management and patient outcomes.