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Superior dislocation of the patella with interlocking osteophytes
The Journal of Trauma
|March 1, 1982
Summary
Superior patellar dislocation, a rare condition, occurs without tendon rupture, often due to hyperextension. It is easily reduced and allows full post-reduction motion.
Area of Science:
- Orthopedic Surgery
- Radiology
- Sports Medicine
Background:
- Superior dislocation of the patella is a rare injury.
- This specific type of dislocation is characterized by interlocking osteophytes.
Observation:
- The condition was documented only once radiographically.
- It occurs without associated tendon rupture.
- Hyperextension forces are implicated in its etiology.
Findings:
- Reduction of the superior patellar dislocation is straightforward via manipulation.
- No anesthesia is required for the reduction procedure.
- Patients regain full active motion after reduction.
Implications:
- This entity must be differentiated from vertical patellar dislocations.
- Recognition of this distinct patellar dislocation is important for appropriate management.
- The ease of reduction and recovery highlights its unique biomechanical profile.