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Posttraumatic Subfibular Ossicle Formation in Children: Experience in a Single Primary Care Unit
Dong Yeon Lee1, Doo Jae Lee1, Dong Han Kim2
1Department of Orthopedic Surgery, Seoul National University Hospital, Jongno-gu, Seoul.
Subfibular ossicles are common after pediatric ankle inversion injuries, with a high incidence observed post-trauma. Most ossicles likely develop after injury rather than being congenital.
Area of Science:
- Orthopedic Surgery
- Pediatric Traumatology
- Radiology
Background:
- The origin of subfibular ossicles (congenital vs. traumatic) is debated.
- Subfibular ossicles are associated with various clinical issues.
Purpose of the Study:
- To determine the incidence of subfibular ossicle formation following pediatric ankle inversion injuries.
- To investigate the relationship between injury severity and ossicle development.
Main Methods:
- Retrospective case series of 593 pediatric patients with ankle inversion injuries.
- Radiographic evaluation at initial visit and >6-month follow-up for 188 patients.
- Correlation of ossicle incidence with initial injury grade.
Main Results:
- 1.0% of initial ankle radiographs showed unrelated subfibular ossicles.
- Overall incidence of subfibular ossicles reached 39.4% at follow-up.
- Ossicle formation correlated with initial injury severity; wafer fragments often became ossicles.
Conclusions:
- Subfibular ossicle formation is a frequent outcome of pediatric ankle inversion injuries.
- Findings suggest most pediatric subfibular ossicles are post-traumatic.
- High incidence underscores the importance of considering trauma in etiology.
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