Patient-reported outcomes following primary total hip arthroplasty in Crowe type III or IV developmental dysplasia are comparable to those in Crowe type I: a case-control study of 96 hips with intermediate-term follow-up

Abstract

Background: A few previous studies have investigated patient satisfaction after total hip arthroplasty (THA) according to the degree of pelvic deformity. This study compared patient-reported outcomes after primary THA for Crowe types III, IV and I dysplasia. Methods: This retrospective, single-center, single-surgeon case-control study included patients who underwent primary THA between 2008 and 2016. We sent postal questionnaires to 38 patients with Crowe type III and IV dysplasia. Among the questionnaire respondents, 23 patients, excluding those with a follow-up period of < 1 year, were enrolled as the H group. The control group included 46 patients with Crowe type I, matched for sex, age, body mass index and surgical approach. To investigate the influence of femoral shortening osteotomy, the H group was divided according to whether femoral shortening osteotomy was performed. Ten patients underwent THA with femoral shortening osteotomy (FO group), while 12 patients underwent THA without femoral shortening osteotomy (N-FO group). Patient demographics, mean follow-up period, surgical information, pre-and postoperative leg length discrepancy (LLD), and perioperative complications were investigated. Clinical evaluations were performed using the Japanese Orthopaedic Association (JOA) scores, 36-item short-form survey (SF-36), net promotor score (NPS), visual analogue scale (VAS), and questionnaires. The VAS and SF-36 scores were determined only at final follow-up.

Anterolateral approach may be superior to posterolateral approach in controlling postoperative lower limb discrepancy in primary total hip arthroplasty: A single-center, retrospective cohort study

“…Special thinner and shorter stems with more non-sprouted sleeves may be more suitable. [ 34 , 35 ] Previous studies have demonstrated that external obturator footprint, robotic-assisted intervention, gait training, and three-dimensionalprinted individual templates provide personal plan to improve the prognosis for DDH patients. [ 36 , 37 ] Arthroplasty surgeons are, therefore, advised to pay more attention to the perioperative plan in consideration of high risk of postoperative LLD.…”

Three-dimensional morphological study of the proximal femur in Crowe type IV developmental dysplasia of the hip

“…In the setting of high dislocation hip, the S-ROM cementless femoral stem (DePuy, Warsaw, USA) is widely used to achieve a better fit and fill in both the metaphyseal and diaphyseal medullary canal and can also adjust the excessive anteversion [ 32 – 34 ]. Considering the cylindrical shape of the S-ROM distal stem, we chose the best-fitting circle to evaluate the medullary canal quantitatively instead of ML and AP canal widths.…”

Robotic-arm assisted THA can achieve precise cup positioning in developmental dysplasia of the hip

“… 5 - 7 However, recent reports showed that complication rates were similar between non-DDH and DDH patients. 37 , 38 Siddiqi et al 38 demonstrated that no statistically significant differences were found in readmission or reoperation rates between non-DDH and DDH patients. In this study, postoperative complications, such as infection, dislocation, and nerve paralysis, did not occur until one year of follow-up.…”