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- Ashok Sunil Gavaskar, Muthukumar Subramanian, and Naveen Chowdary Tummala.
- Consultant Surgeons, Department of Orthopedics and Trauma, Parvathy Hospital, Chennai, India.
- Indian J Orthop. 2012 Sep 1; 46 (5): 556-60.
BackgroundThe proximal femur nail antirotation (PFNA) is the recent addition to the growing list of intramedullary implants for trochanteric fracture fixation. The initial results in biomechanical and clinical studies have shown promise. We report our results of low velocity trochanteric fractures internally fixed by proximal femur nail antirotation.Materials And MethodsA prospective study was conducted to assess the results of 122 elderly patients with low velocity trochanteric fractures [39 - stable (AO; 31-A1) and 83 - unstable (AO; 31-A2 and A3)] treated with PFNA from December 2008 to April 2010. Followup functional and radiological assessments were done. Results obtained were compared between stable and unstable fracture patterns using statistical tools.ResultsThe mean followup was 21 months (12-28 months). 11 patients were lost in followup. Union was achieved in all but one patient. Varus collapse was seen in 14 patients and helical blade cut out in one patient. Stable and satisfactorily reduced fractures had a significantly better radiological outcome. Functional outcome measures were similar across fracture patterns. 65% of the patients returned to their preinjury status. The overall complication rate was also significantly higher in unstable fractures.ConclusionGood results with relatively low complication rates can be achieved by PFNA in trochanteric fractures in the elderly. Attention to implant positioning, fracture reduction and a good learning curve is mandatory for successful outcomes.
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