To Evaluate effectiveness of Dimon-Hughston osteotomy using a dynamic hip screw in unstable intertrochanteric fractures in term of union. Descriptive case series This was a multicenteric study conducted at Lahore General Hospital, Surriya Azeem Hospital Lahore and Civil Hospital Quetta for the period of 36 months [Between January 2012-December 2014] . Through non-probability purposive sampling, 50 cases of unstable intertrochanteric fractures were included. All fifty patients were managed by Dimon Hughston osteotomy with a 135 [degree] dynamic hip screw. During the course of follow up radiographically data for union, nonunion and implant position and clinically data regarding infection was recorded. Data was analyzed by SPSS version 20. The mean age of all patients was 59.76 years [range 38-80years] . There were 28 [56%] male and 22 [44%] female patients. All patients included in study were AO type A2 fractures. Union occurred in 34 patients 68%, mean union time was 19.88 weeks [Range 18-26 weeks] nonunion and pulling out of plate occurred in 16 patients 32% during course of follow-up. Only 2 [4%] patients developed superficial infection later on which settled down with antibiotics. Dimon-Hughston osteotomy for unstable pertrochanteric fractures may provided immediate stability for early weight-bearing in some patients, but has got high failure rate