W h e n analyzing the probabil ist ic per formance of an a lgor i thm one usually considers this a lgor i thm w.r.t , an infinite family of probabi l i ty spaces of inputs. In case of satisfiability a lgor i thms for proposi t ional formulas main ly two types of families of input spaces are considered: One is the constant density model dealt with for example in [6] the other one is the constant...

Tranexamic acid (TXA) reduces red blood cell transfusion in various orthopedic surgeries, yet the degree of practice variation its use among anesthesiologists and surgeons has not been described. To target future knowledge transfer implementation strategies, to better understand determinants variability prophylactic TXA use, our primary objective was evaluate influence surgical team members on ...

BACKGROUND To address the long-term problems of bearing surface wear and osteolysis associated with conventional metal-polyethylene (M-PE) total hip arthroplasty (THA), metal-metal (M-M), and ceramic-ceramic (C-C) bearings have been introduced. These bearing surfaces are associated with unique risks and benefits and higher costs. However the relative risks of these three bearings in an older po...

Total hip arthroplasty (THA) in patients with high hip dislocation is challenging and technically demanding. Nerve injury is a problem associated with leg lengthening after THA. The purpose of this study was to identify the risk factors for sciatic nerve injury after THA in patients with high hip dislocation. Thirty-seven patients (41 THAs) with Crowe type IV hips were consecutively treated. Th...

PURPOSE To evaluate hip parameters such as vertical centre of rotation (VCR), horizontal centre of rotation (HCR), femoral offset, and leg length after total hip arthroplasty (THA) using the Nanos short-stem prosthesis. METHODS Medical records of 73 men and 74 women aged 25 to 92 (mean, 63) years who underwent THA using the Nanos short-stem prosthesis by a single surgeon were reviewed. Prior ...

BACKGROUND Metal-on-metal hip resurfacing arthroplasty (MoM HRA) may offer potential advantages over total hip arthroplasty (THA) for certain patients with advanced osteoarthritis of the hip. However, the cost effectiveness of MoM HRA compared with THA is unclear. QUESTIONS/PURPOSES The purpose of this study was to compare the clinical effectiveness and cost-effectiveness of MoM HRA to THA. ...