Background. Although active ankle movement plays a predominant role in mechanical thromboprophylaxis following total hip arthroplasty (THA), the most effective frequency of movement remains unclear. Materials and Methods. In 29 consecutive patients undergoing THA, the velocity of blood flow in the profunda femoris was measured after various frequencies of ankle movement two days after THA using...

Intraoperative blood loss is frequently an overarching concern during total hip arthroplasty (THA) for patients who have ankylosing spondylitis with hip involvement. However, the factors that affect blood loss have not been identified. The goal of this study was to investigate these factors among patients with ankylosing spondylitis. Patients in the authors' department who had ankylosing spondy...

PURPOSE To review patients with hip diseases undergoing total hip arthroplasty (THA) during 2 different periods. METHODS During the periods 1994 to 1996 and 2004 to 2006, 12 men and 28 women (mean age, 57 years) and 55 men and 78 women (mean age, 62 years) underwent THA for hip diseases, respectively. The aetiologies of the hip diseases were classified. Preand post-operative radiographs of th...

PURPOSE Radiation therapy (RT) is frequently administered to prevent heterotopic ossification (HO) after total hip arthroplasty (THA). The purpose of this study was to determine if there is an increased risk of HO after RT prophylaxis with shielding of the THA components. METHODS AND MATERIALS This is a retrospective analysis of THA patients undergoing RT prophylaxis of HO at Brigham and Wome...

The metabolic fate of tacrine [1,2,3,4-tetrahydro-9-acridinamine monohydrochloride monohydrate (THA)] was examined in rats, dogs, and humans. After administration of single oral doses of [14C]THA to rats, dogs, and humans, drug-derived material was well absorbed, with urinary excretion being the predominant route of radiolabel elimination. Metabolic profiling of plasma and urine from rats, dogs...

With the arrival of an aging society and progress surgical procedures, total hip arthroplasty (THA) has been carried out more more. However, postoperative pain severely affected patient’s recovery, there is currently no reliable analgesic method available. Evidence-based international expert consensus also recommends, compared to LIA, peripheral nerve block (PNB) as a central approach use in TH...

BACKGROUND Total hip arthroplasty (THA) is a cost-effective surgical intervention that substantially improves quality of life. Recent advances have broadened the indications to include younger, working-age patients. Despite these benefits, there are often long waits for this procedure in Canada. Furthermore, there exists little documentation of the ability of patients waiting for THA to maintai...

Total hip arthroplasty (THA) is an effective intervention for the treatment of arthrosis with excellent survivorship. Nonetheless, dislocation and osteolysis remain significant complications. A dual-mobility acetabular component has been advocated to improve stability and wear. Stability is imparted by increasing the effective femoral head size, which allows a larger range of motion (ROM) befor...