Femoral neck fracture secondary to in situ pinning of SCFE

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- a previously unreported complication. Baynham-GC et al. J-Pediatr-Orthop. 1991 Mar-Apr; 11(2): 187-90 ABSTRACT: Two patients developed femoral neck fractures as a complication of in situ pinning for slipped capital femoral epiphysis (SCFE) by surgeons who each used a cannulated screw system. Both patients exhibited recurrent hip pain, femoral neck fracture, and coxa vara after asymptomatic postoperative intervals of 2 and 6 months, respectively. The fracture in one patient healed with weight relief alone: the other persisted, requiring a vascularized pedicle bone graft. Bone biopsy at surgery disclosed Avascular Necrosis] (AVN). Based on preliminary studies of heat production during reaming, we speculate that these fractures developed through areas of AVN secondary to thermal injury.