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  • Title: Accuracy of valgus osteotomy using dynamic hip screw.
    Author: Kulkarni SG, Kulkarni GS, Babhulkar S, Kulkarni MG, Kulkarni RM.
    Journal: Injury; 2017 Aug; 48 Suppl 2():S2-S7. PubMed ID: 28802416.
    Abstract:
    BACKGROUND: Non-union of neck femur is a common but difficult situation to manage especially in young adults. There are two main options of arthroplasty or osteotomy. The aim of this study was to assess the results of intertrochanteric valgus osteotomy in non-union femoral neck fractures. PATIENTS AND METHODS: We present a study of 44 cases of neck femur non-union including untreated fractures, late presentations (more than 3 weeks), treated with compression screw, DHS. From 2006-2016, 44 patients presented to our institute and we analyzed them prospectively on the following criteria: Pauwel's angle, Garden classification, union at fracture site, union at osteotomy site, osteoporosis and AVN changes. Inclusion criteria were age<65, neck not reabsorbed, no AVN. Powel's angle was calculated using the anatomic axis of femur. Wedge angle is equal to Powel's angle minus 30 degree. Entry point of DHS was at the base of greater trochanter and tip of the screw was in the inferior quadrant. Y osteotomy was done in the distal half of the lesser trochanter with a proximal straight cut. RESULTS: Complete union was noted in 93% of the cases. One patient with uncontrolled diabetes developed severe infection and was treated with excision arthoplasty. AVN occurred in 3 cases. The Powell's angle was reduced to mean 30 (22-39). The neck shaft angle was increased to mean 140 (130-150). Limp was noted in almost all patients but they were able to walk full weight bearing with or without the support of a stick. CONCLUSION: Valgus intertrochanteric osteotomy achieved good union rates and good functional outcome with minimal complications.
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