Outcome of short versus conventional stem for total hip arthroplasty in the femur with a high cortical index: a five year follow-up prospective multicentre comparative study

摘要: The uncemented total hip arthroplasty (THA) has become the choice for many surgeons. Although conventional femoral components have a proven track record, there remain concerns about rate of thigh pain, proximal stress shielding, and consequent loss bone stock at revision surgery. Inclusion criteria were following: patients between 50 85 years old undergoing primary THA with implant short (group 1) or 2) stem shape type A, according to Dorr classification. Clinical follow-up was registered using OHS, HHS, Womac scores. radiographic scans evaluated in order compare component positioning remodeling five year follow-up. We included analysis 60 subjects group 1 67 2. No differences groups comparing demographic operative data. One case (1.7%) three cases 2 (4.5%) reported an intra-operative fracture. There significant improvement functional scores both no difference final incidence pain 14.9% 3.3% (p = 0.033). Radiographic documented terms shielding thinning medial lateral cortex favour 1. Moreover, showed higher varus angle six month In high cortical index, shows better clinical radiological outcomes five year