Michael Halpern

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BACKGROUND Over the past decade, there has been an increase in the number of revision total hip and knee arthroplasties performed in the United States. The purpose of this study was to formulate projections for the number of primary and revision total hip and knee arthroplasties that will be performed in the United States through 2030. METHODS The(More)
BACKGROUND The purpose of this study was to quantify the procedural rate and revision burden of total hip and knee arthroplasty in the United States and to determine if the age or gender-based procedural rates and overall revision burden are changing over time. METHODS The National Hospital Discharge Survey (NHDS) for 1990 through 2002 was used in(More)
This meta-analysis compares health care resource use costs, adherence, and persistence between groups of patients taking antihypertensives as single-pill combinations (SPCs) vs free-equivalent components (FEC) based on a structured review of published studies. The search yielded 12 retrospective database studies included in analyses. The mean difference in(More)
Comparisons between younger and older stroke patients including comorbidities are limited. Prospective data of consecutive patients with first ever acute ischemic stroke were compared between younger (≤ 45 years) and older patients (> 45 years). Among 1004 patients, 137 (14 %) were ≤ 45 years. Younger patients were more commonly female (57 % versus 34 %; p(More)
Garter snakes that are used for scientific laboratory studies or kept as exotic pets often become ill and die early in captivity. They may also act as reservoirs of potential human pathogens or transmit infection to man. A total of 126 strains of aerobic and facultative bacteria, most potential human and snake pathogens, were isolated from 82 garter snake(More)
The authors report on three patients who received intra-articular corticosteroid injections (IACI) in the small joints of their hands for the symptomatic relief of local inflammation. In these cases radiographs showed that among the complications of IACI are periarticular soft-tissue calcifications. Evidence suggests that these calcifications are composed(More)