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The primary purpose of this prospective, randomized study was to determine if patient-specific instrumentation (PSI) for total knee arthroplasty (TKA) shortened surgical time. Secondarily the number of instrument trays and alignment were also compared to cases performed with traditional instrumentation (TI). Fifty-two cases (26 per group) were randomized(More)
BACKGROUND TKA is among the fastest growing interventions in medicine, with procedure incidence increasing the most in younger patients. Global knee scores have a ceiling effect and do not capture the presence of difficulty or dissatisfaction with specific activities important to patients. QUESTIONS/PURPOSES We quantified the degree of residual symptoms(More)
Few longitudinal studies have investigated the effects of amenorrhea and amenorrhea plus exercise on bone mineral density (BMD) of young women. We carried out a 2-yr comparison of dancers and nondancers, both amenorrheic and normal, that investigated the role of hypothalamic amenorrhea on bone in this context. We studied 111 subjects (mean age, 22.4 +/- 4.6(More)
In a survey of 75 dancers (mean age, 24.3 years) in four professional ballet companies, we found that the prevalence of scoliosis was 24 percent and that it rose with increases in age at menarche. Fifteen of 18 dancers (83 percent) with scoliosis had had a delayed menarche (14 years or older), as compared with 31 of 57 dancers (54 percent) without scoliosis(More)
BACKGROUND The aim of this study is assess whether patients with Indian ethnic background are at an increased risk of developing gallbladder cancer (GBC) if they have been diagnosed with ultrasonic abnormalities of the gallbladder. METHODS Between January 1998 and July 2006, 137,655 abdominal ultrasound examinations were performed in Leeds Teaching(More)
OBJECTIVE Two strategies for surgical management are used for infants with hypoplastic left heart syndrome (HLHS), primary heart transplantation and the Norwood procedure. We sought to determine how these 2 surgical approaches influence neurodevelopmental outcomes at school age. METHODS A multicenter, cross-sectional study of neurodevelopmental outcomes(More)
UNLABELLED Although the published studies on the outcomes of total hip arthroplasty (THA) performed with currently available ceramic components show high survivorship and low bearing wear at midterm followup, concern over ceramic fracture and squeaking persist. For these reasons, the use of ceramic is limited. Recently, a new alumina matrix composite(More)
Recurrent hemarthrosis is an uncommon but troublesome complication following knee arthroplasty. This study reports the results for 13 patients with spontaneous recurrent hemarthrosis after knee arthroplasty treated with arterial embolization. The average interval between arthroplasty and embolization was 47 months (range, 2-103 months), and the average time(More)
BACKGROUND The routine use of stems in revision TKA improves survival rates by enhancing the stability of the prosthesis. The ideal method of stem fixation (cemented or uncemented) in two-stage reimplantation remains controversial. QUESTIONS/PURPOSES The purpose of this study was to answer the following questions: (1) Are rerevision rates for aseptic(More)