The Short-term Clinical Outcome of Total Hip Arthroplasty Using Short Metaphyseal Loading Femoral Stem / 대한고관절학회지

PURPOSE: The purpose of this study was to retrospectively evaluate the short-term clinical and radiological outcomes of total hip arthroplasty (THA) with short metaphyseal loading femoral stem. MATERIALS AND METHODS: We retrospectively reviewed the records of 56 cases in 47 patients who had undergone THA with short metaphyseal loading femoral stem from April 2010 to December 2011. There were 20 males and 27 females. The mean age was 54 years (range, 26-77 years). The average follow up period was 4.6 years. Clinical results were evaluated by Harris hip scores (HHS) before the operation and at the last follow-up. Radiographic analysis was done by evaluating osteolysis, loosening, stress shielding, and alignement. RESULTS: The mean HHS significantly improved from 45 (range, 15-58) preoperatively to 98 (range, 85-100) at the last follow-up. In radiographic analyses, there was no evidence of osteolysis or loosening around the stems and the acetabuluar components. All cases showed rounding off of the calcar, grade 1 bone resorption of the proximal femur. With regard to implant alignment, 51 femoral component (91.1%) were in neutral position, and 5 (8.9%) were in varus position. There was 1 intraoperative fracture treated by cerclage wiring and no case was revised during follow-up period. CONCLUSION: Although longer follow-up is needed to confirm the durability of the short metaphyseal loading femoral stem, this short stem might provide stable fixation without diaphyseal fixation and demonstrated good clinical result at mean 4.6 year short term follow-up.

Femoral Neck Fracture After Removal of the Intramedullary Nail for the Fixation of an Intertrochanteric Fracture: Report of 2 Cases / 대한정형외과학회잡지

Intramedullary fixation using Gamma or Proximal Femoral Nail (PFN) for example becomes a popular fixation method for unstable trochanteric fracture. Due to the old age of patients with such fractures, extraction of these devices has not always been recommended after fracture healing. However, protruding metal or sliding lag screws can cause pain, which makes removal unavoidable. The authors present 2 cases of femoral neck fracture during ambulation after the removal of such devices.