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Bilateral nontraumatic anterior acromioclavicular joint dislocation. A case report
Clinical Orthopaedics and Related Research
|August 1, 1986
Summary
This study reports a rare case of bilateral nontraumatic anterior acromioclavicular joint dislocation in a teenage boy. The condition, likely caused by ligament laxity, required no treatment due to the patient being asymptomatic.
Area of Science:
- Orthopedics
- Radiology
- Pediatric Medicine
Background:
- Acromioclavicular (AC) joint dislocations are typically caused by significant trauma.
- Anterior dislocation describes the acromial process moving anterior to the distal clavicle.
Observation:
- A 14-year-old male with spastic hemiparesis presented with incidentally discovered bilateral nontraumatic anterior AC joint dislocation.
- Radiographs confirmed the anterior displacement of the acromial processes relative to the distal clavicles.
Findings:
- The dislocation was nontraumatic, with no history of injury.
- No osseous abnormalities were noted; localized ligamentous laxity of the AC and coracoclavicular ligaments was the presumed etiology.
- The patient was asymptomatic, indicating a benign clinical course.
Implications:
- This case highlights that AC joint dislocations can occur without trauma, particularly in individuals with underlying ligamentous laxity.
- It underscores the importance of considering ligamentous integrity in the differential diagnosis of AC joint dislocations.
- Asymptomatic cases may not require intervention, emphasizing individualized patient assessment.