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DISPLACED INTRACAPSULAR FEMORAL NECK FRACTURES IN PAEDIATRIC PATIENTS: LONG TERM RESULTS IN A TEACHING HOSPITAL.



Abstract

Purpose of study: To evaluate the results of a consecutive series of displaced intracapsular paediatric femoral neck fractures treated by early closed reduction and Austin Moore Pin fixation.

Method: Between 2001 and 2004, 14 paediatric patients with a mean age of 10 years suffering femoral neck fractures were identified. All traumatic epiphyseal, trans-cervical and basi-cervical femoral neck fractures were included. Pathological and intertrochanteric fractures were excluded. There were 11 male and 3 female patients. All patients were treated by reduction and internal fixation using Austin Moore pins. Patients were allowed to mobilize non-weight bearing with crutches for 3 months, followed by partial to full weight bearing. The mechanism of injury, associated injuries, time to reduction and time to union were reviewed. All patients were followed up till union. Mean follow up was 18 months. Patients were assessed clinically for pain, limp, use of walking aid, walking distance, stair climbing, cross leg sitting and squatting. Hip movements and limb length discrepancy were noted. Radiographs were analyzed to determine the adequacy of reduction, fracture healing and changes of avascular necrosis (AVN).

Results: Mean injury-operation interval was 38.5 hours. Mean time to union was 16 weeks. All patients had excellent initial reduction which was maintained till healing. All patients’ fractures healed uneventfully. There were no complications in the form of non-union, AVN, premature physeal closure, angular deformity or implant back-out.

Conclusions: Paediatric femoral neck fractures can be treated successfully with expeditious reduction and internal fixation. The risk of the devastating complication of AVN can be lessened with urgent surgery and near anatomical reduction.

Correspondence should be addressed to: Mr J. B. Hunter, BSCOS, c/o BOA, The Royal College of Surgeons, 35–43 Lincoln’s Inn Fields, London WC2A 3PE.