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  • Title: Reverse oblique intertrochanteric femoral fractures treated with the intramedullary hip screw (IMHS).
    Author: Chou DT, Taylor AM, Boulton C, Moran CG.
    Journal: Injury; 2012 Jun; 43(6):817-21. PubMed ID: 22040693.
    Abstract:
    AIMS: Recent studies have recommended the use of cephalo-medullary devices for the treatment of reverse oblique intertrochanteric femoral fractures (Orthopaedic Trauma Association/Arbeitsgemeinschaft für Osteosynthesefragen, OTA/AO 31-A3). Both the proximal femoral nail (PFN) and the gamma nail (GN) have shown good outcome results but the results of treatment with the intramedullary hip screw (IMHS) have not been reported in the literature. Our aim was to review the outcomes of these unstable fractures treated with the IMHS implant at our institute. METHODS: Between 1999 and 2008, 6724 consecutive hip fractures were treated at our institute. There were 115 reverse oblique intertrochanteric fractures and 63 of these were treated with the IMHS. We retrospectively reviewed clinical and radiological records for these fractures treated with the IMHS. Follow-up duration ranged from 1 to 6 years. RESULTS: Amongst the 63 patients treated with the IMHS, 57 (90.5%) fractures were reduced satisfactorily with one poorly positioned hip screw and one breach of the anterior femoral cortex. The mean operative time was 115 min, 22 patients required a blood transfusion and 20 had postoperative medical complications. The major orthopaedic complications included two cases of malrotation, three nonunions and one traumatic periprosthetic fracture with a total failure rate of 7.9%. There were four cases of distal locking bolts breaking or backing out. The 30-day mortality was 6.5%. CONCLUSION: The clinical and radiological outcomes achieved with the IMHS compare favourably to the results achieved with other cephalo-medullary devices. We consider the long IMHS a good implant for the treatment of these unstable fractures.
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