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Intercondylar dislocation of the patella with vertical axis rotation
1Department of Emergency Medicine, Eastern Virginia Medical School, Norfolk 23501, USA.
The American Journal of Emergency Medicine
|February 3, 1999
Summary
A rare case of intercondylar patellar dislocation with vertical axis rotation, caused by blunt trauma, is presented. The knee was locked in extension, but manipulation under sedation successfully reduced the dislocation.
Area of Science:
- Orthopedic Surgery
- Traumatology
Background:
- Intercondylar dislocation of the patella is an uncommon injury.
- This specific type involves vertical axis rotation, making it particularly rare.
Observation:
- A patient sustained blunt trauma to the lateral patellar border.
- The knee was locked in full extension.
- A palpable, anteriorly facing, ridge-shaped deformity indicated patellar displacement.
Findings:
- The injury involved intercondylar dislocation of the patella with vertical axis rotation.
- The medial border of the patella faced anteriorly, creating a distinct deformity.
- Successful reduction was achieved through closed manipulation.
Implications:
- This case highlights a rare patellar dislocation variant.
- Understanding the mechanism and presentation is crucial for diagnosis.
- Closed reduction under conscious sedation is a viable treatment option for this injury.