Article entitled "two kinds of total hip arthroplasty for the treatment of adult unilateral crowe iv type hip dysplasia" written by mei xiaoliang, zhang zhenxiang, tong jian, zhu wei, and zhao jianning was reviewed.The aim of the study was to compare the clinical efficacy of two kinds of total hip arthroplasty (tha) for the treatment of adult crowe iv type hip dysplasia (ddh) without osteotomy and subtrochanteric osteotomy.This study retrospectively analyzed 35 adult patients with crowe iv ddh who underwent tha from january 2014 to october 2017.The patients were treated with biotype prosthesis through posterolateral approach, in which common biotype prosthesis stem (johnson & johnson, usa) was used for the femoral side in non-osteotomy group, and s-rom group matching femoral stem (johnson & johnson, usa) was used for the femoral side in subtrochanteric osteotomy group.Non-osteotomy group had 2-3 screws for acetabular fixation.Osteotomy group had one hollow screw.Adverse events: in the non-osteotomy group, there was 1 case of sciatic nerve traction injury and 1 case of femoral neurocutaneous nerve branch injury after surgery, which recovered spontaneously without sequelae.In the subtrochanteric osteotomy group, there were 3 cases of femoral split fracture, which were fixed with steel wire and followed by bed rest for 3 months and late ambulation.In the subtrochanteric osteotomy group 1 case of hip dislocation occurred in the subtrochanteric osteotomy group 1 week after surgery, and no re-dislocation occurred after closed reduction (age 46-year-old male).Leg length discrepancy was noted in both groups.No intervention was noted.
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