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  • Title: [The trochanteric flip osteotomy.].
    Author: Schneeberger AG, Murphy SB, Ganz R.
    Journal: Oper Orthop Traumatol; 1997 Mar; 9(1):1-15. PubMed ID: 17009168.
    Abstract:
    GOAL OF SURGERY: Easy access to the posterior, superior and anterior joint capsule through an osteotomy which reduces the risk of complications and the incidence of non-union. INDICATIONS: Hip joint revision with or without intertrochanteric osteotomy, periarticular ossifications, difficult total hip procedures, exchange procedures. CONTRAINDICATIONS: Absolute: None Relative: Distal transfer of the trochanter. PREOPERATIVE WORK UP: Radiographs in 2 planes (anterior-posterior pelvis+"false profile" hip). POSITIONING AND ANAESTHESIA: Lateral decubitus. General anaesthesia. SURGICAL TECHNIQUE: In lateral decubitus the greater trochanter will be osteotomized from posterior leaving a 1 to 1.5 cm thick bony wafer uniting the insertion of the gluteus medius and minimus with the origin of the vastus lateralis. The trochanteric crest remains untouched. After refixation with nonresorbable sutures #3 the fragment is not subjected to a unidirectional tension by the abductors which could interfere with the consolidation. POSTOPERATIVE MANAGEMENT: Bed rest with lower limb in neutral position. Mobilization with 2 canes on the 2nd postoperative day. The timing of partial weight bearing depends on the type of surgery. Abductor exercises after 6 weeks. POSSIBLE COMPLICATIONS: Bony wafer too thin or too thick. Inadequate refixation. Delayed consolidation. Cranial migration of the greater trochanter. RESULTS: Between 1991 and 1994 41 patients were operated. Diagnoses, see Table 1. Method of refixation: see Table 2. After 21+/-9 months 39 patients could be reexamined clinically, and radiological after 17+/-11 months: 38 osteotomies consolidated. Cranial migration varied between 0 and 8 mm. 25 patients were free of symptoms, 12 had slight and 2 moderate pain over the trochanter. Avulsion of wire cerclage: 2, foreign body irritation: 2 necessitating implant removal.
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