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Translational injuries in posterior elbow dislocation
D R Feldman1, S I Schabel, R J Friedman
1Department of Diagnostic Radiology, Medical University of South Carolina, Charleston 29464, USA.
Skeletal Radiology
|February 1, 1997
Summary
A novel radiographic sign for posterior elbow dislocation is identified: a capitellum defect caused by radial head impact. This finding, visible on lateral X-rays, aids in diagnosing elbow injuries.
Area of Science:
- Orthopedic Surgery
- Radiology
- Trauma Imaging
Background:
- Posterior elbow dislocation is a common injury.
- Diagnosis often relies on standard radiographic views.
- Associated injuries can complicate management.
Observation:
- A distinct defect on the posterior capitellum was observed in posterior elbow dislocations.
- This finding resulted from the radial head impacting the capitellum during dislocation.
- The defect was visualized on lateral radiographs before reduction and confirmed post-reduction and with MRI.
Findings:
- The capitellum defect represents a new radiographic finding in posterior elbow dislocation.
- This lesion is analogous to the Hill-Sachs/Bankart lesion complex in shoulder injuries.
- Plain radiography can reveal this specific capitellar impaction injury.
Implications:
- This finding enhances radiographic assessment of elbow dislocations.
- It provides a new diagnostic marker for posterior elbow injuries.
- Understanding this lesion may improve treatment strategies for elbow trauma.