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Pediatric myositis ossificans circumscripta following traumatic hip dislocation: A case report
Khadija Laasri1, Siham El Haddad1, Salma Marrakchi1
1Mother and Child Imaging Department - HER - Ibn Sina Hospital, Mohammed V University in Rabat, Rabat, Morocco.
Radiology Case Reports
|February 17, 2023
Summary
Myositis ossificans, a bone formation in muscle, can complicate traumatic hip dislocation. This case highlights a rare instance in a young girl, treated nonoperatively.
Area of Science:
- Orthopedics
- Radiology
- Pathology
Background:
- Myositis ossificans is a non-neoplastic condition involving heterotopic bone formation within skeletal muscle.
- It is classified into three subtypes: fibrodysplasia ossificans progressiva, nontraumatic myositis ossificans, and traumatic myositis ossificans circumscripta.
Observation:
- This report details a rare complication of traumatic hip dislocation: myositis ossificans circumscripta.
- The case involves a 10-year-old girl diagnosed with Thevenard's syndrome.
Findings:
- Radiological imaging, including X-rays and CT scans, confirmed the diagnosis.
- Key diagnostic features included mature peripheral bone with a smooth contour, well-separated from the underlying bone.
Implications:
- This case expands the known spectrum of myositis ossificans complications.
- It underscores the importance of considering myositis ossificans in the differential diagnosis of hip pain following trauma, even in the absence of direct injury to the muscle.
- Nonoperative management was successful for both the dislocation and the ossificans complication.
