The purpose of this investigation was to determine the effect of hip position and test velocity on the quadriceps and hamstring reciprocal muscle group ratio. Twelve subjects (7 male, 5 female) were tested for isokinetic peak torque at 60, 180, and 240 degrees /sec from the seated and supine positions. Gravity correction was obtained to determine quadriceps and hamstring peak torque, and to det...

OBJECTIVES To evaluate the impact of rheumatoid arthritis (RA) on the incidence of hip fractures. METHODS All patients with acute hip fractures admitted to Jyväskylä Central Hospital in 1991-93 (n=517) were selected from the hospital discharge register. Medical records of these patients were studied retrospectively for RA fulfilling the American Rheumatism Association criteria. The prevalence...

INTRODUCTION We determined lower limb neuromuscular capacities associated with falls and fall-related injuries in older people with declining peripheral nerve function. METHODS Thirty-two subjects (67.4 ± 13.4 years; 19 with type 2 diabetes), representing a spectrum of peripheral neurologic function, were evaluated with frontal plane proprioceptive thresholds at the ankle, frontal plane motor...

AIM To investigate whether airflow limitation is associated with bone mineral density (BMD) and risk of hip fractures. METHODS A community sample of 5,100 subjects 47-48 and 71-73 years old and living in Bergen was invited. Participants filled in questionnaires and performed a post-bronchodilator spirometry measuring forced expiratory volume in 1 second (FEV1) and forced vital capacity (FVC)....

Hip fracture in Acutely ill hospitalized medical patients Antonio Zapatero Raquel Barba§, Jesús Canora, Juan E Losa, Susana Plaza, Jesús San Roman, Javier Marco 1 Servicio de Medicina Interna, Hospital Universitario de Fuenlabrada, Fuenlabrada, Madrid, Spain 2 Servicio de Medicina Interna, Hospital Rey Juan Carlos, Móstoles, Madrid, Spain 3 Servicio de Medicina Interna, Hospital Universitario F...

We conducted meta-analysis of clinical studies of HA coated femoral stems in hip arthroplasty. After an exhaustive literature search, we abstracted relevant data on the outcomes of stem survival from aseptic loosening and Harris Hip scores. The risk ratios and mean differences with 95% confidence intervals (CI) are reported. 9 studies met our inclusion criteria for the analysis. The cumulative ...

The tribological performance of artificial hip joints is a critical issue for their success, because adverse tissue reaction to wear debris causes loosening and failure. Many studies on wear and lubrication of hip prostheses have been published in the last 10 years, mostly on experimental tests. Theoretical/ numerical models have been proposed for investigating geometrical and material paramete...