This complaint is from a literature source.Literature citation: ma hy, sun jy, du yq, gao zs, shen jm, li tj, zhou yg.Model to predict need for subtrochanteric shortening osteotomy during total hip arthroplasty for crowe type iv developmental dysplasia.Med sci monit.2020 oct 25;26:e926239.Doi: 10.12659/msm.926239.Pmid: 33099571; pmcid: pmc7594583.Objective/methods/study data: one hundred forty-nine patients (186 hips) with crowe type iv ddh who underwent total hip arthroplasty (tha) with s-rom implants from january 2010 to november 2018 were included in the study.The acetabular components were placed at the true acetabulum and the trial femoral component was inserted.Reduction then was attempted and if it could not be achieved, ssot was performed.Using multivariable cox regression analysis, a model was constructed that included age, sex, surgical history, use of a cone- or triangle-shaped sleeve, secondary acetabulum formation, and percentage of dislocation as predictive factors for ssot.The prostheses used in the patients were modular s-rom stems (depuy) and cementless acetabular cups.Duraloc option cups (depuy) were used in 33 hips, while pinnacle cups (depuy) were used in 153 hips.A 28-mm ceramic head was used in all procedures.Figure 1 and 2 have illustrative radiographic images of implants but no adverse events noted within captions.Adverse event(s) and provided interventions (acetabular cup product platform is not specified for the adverse events): qty 2 nerve palsy with symptoms disappearing within 1 year and intervention not specified by article.Qty 5 femur fractures and intervention not specified by article.Qty 1 deep venous thrombosis and intervention not specified by article.Qty 9 postoperative dislocations and intervention not specified by article.Qty 1 obvious leg length discrepancy of 2.5 cm and treated with revision.
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