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J Pediatr Orthop. 2003 Nov-Dec;23(6):733-9.

Premature physeal closure following distal tibia physeal fractures: a new radiographic predictor.

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1
Children's Hospital and Health Center, San Diego, California, USA.

Abstract

The incidence and predictors of premature physeal closure (PPC) after pediatric distal tibial fractures were investigated. PPC was defined as evidence of growth plate disturbance on the injured side compared with the uninjured side. Ninety-two fractures were reviewed with at least 1 year of follow-up, or until physiologic closure of the growth plates. Twenty-five fractures (27.2%) were complicated by PPC, as confirmed by CT scan in most cases. Salter-Harris III and IV (medial malleolar type) fractures resulted in the highest percentage of PPC by fracture type (38%). Salter-Harris I and II fractures resulted in PPC in 36% of cases, followed by triplane fractures (21%) and Tillaux fractures (0%). Initial displacement, number of reduction attempts, or treatment method did not significantly affect the incidence of PPC. More anatomic reductions resulted in a statistically significant decrease in PPC rates. Residual physeal gap (>3 mm) following reduction was determined from radiographs in Salter-Harris I and II fractures. If a residual gap was seen on the radiograph, the incidence of PPC increased to 60%; if no gap was present, the incidence decreased to 17%. Open reduction was performed in five Salter-Harris II fractures that had a residual gap. Periosteum was entrapped in the physis in all of these cases. Residual gaps in the physis following closed reduction may represent entrapped periosteum in Salter-Harris I and II fractures. This can lead to a higher incidence of PPC, suggesting that open reduction and removal of the entrapped periosteum may be beneficial.

PMID:
14581776
[Indexed for MEDLINE]

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