We have assessed the influence of isolated and combined rotational malunion of the radius and ulna on the rotation of the forearm. Osteotomies were made in both the radius and the ulna at the mid-diaphyseal level of five cadaver forearms and stabilised with intramedullary metal implants. Malunion about the axis of the respective forearm bone was produced at intervals of 10 degrees. The ranges o...

INTRODUCTION The aim of this study was to determine the best site for bone mineral density (BMD) measurements based on T-scores, age, and beverage consumption. MATERIAL AND METHODS In this prospective study, 271 women stratified by age (average age: 61.9 years) underwent dual energy X-ray absorptiometry (DEXA) scanning of their lumbar spine, hips, and forearms. Osteoporosis was defined as a B...

The total blood flow requirements of a large muscle mass can exceed the maximal cardiac output generated by the heart during exercise. Therefore, to maintain blood pressure, muscle vasodilation must be opposed by sympathetic vasoconstriction. The primary neural signal that increases sympathetic outflow is unclear. In an effort to isolate the vasoconstricting mechanism that opposes vasodilation,...

Forearm compartment syndrome is a surgical emergency that usually requires release of the superficial muscle compartments. In some clinical situations it is imperative to also explore the deep muscle compartments. There are no anatomical guides for surgical exploration of the deep compartments that would minimize collateral damage to surrounding vessels, nerves, and muscles. Surgical injury in ...

The effect of hypercholesterolemia on vascular function was studied in humans. To eliminate the potential confounding effects of atherosclerosis, vascular reactivity was measured in the forearm resistance vessels of 11 normal subjects (serum LDL cholesterol = 111±7 mg/dl) and 13 patients with hypercholesterolemia (serum LDL cholesterol = 211±19 mg/dl, P < 0.05). Each subject received intrabrach...

INTRODUCTION Whitlow is a common disease in clinic, characterized by pain and swelling of finger. However, few articles had reported on extensive infection in the forearm caused by whitlow infected by mycobacterium tuberculosis (MTB). PATIENT CONCERNS A 70-year-old Chinese female complained of fester in back of left hand for 5 days. She had a history of recurrent whitlow for 14 months and pul...

Cardiopulmonary receptor control of the circulation is impaired in a variety of diseases having cardiac hypertrophy as a common feature. Whether this also occurs in the so-called "physiological" cardiac hypertrophy of the athlete, however, is unknown. We studied nine sedentary healthy subjects and 19 age-matched professional runners or hammer throwers who had trained at least 2 hours per day, 5...

Within individuals, critical power appears sensitive to manipulations in O2 delivery. We asked whether interindividual differences in forearm O2 delivery might account for a majority of the interindividual differences in forearm critical force impulse (critical impulse), the force analog of critical power. Ten healthy men (24.6 ± 7.10 years) completed a maximal effort rhythmic handgrip exercise...

We have described a technique for quantifying skeletal muscle metabolism in man in. situ by measing blood flow through the forearm and appropriate arteriovenous differences in concentration of selected metabolites ( 1 ). The technique lends itself to analysis of local effects of hormones and other possibly potent agents. The agent can be injected into the brachial artery at constant rate with t...

Forearm support during keyboard use has been reported to reduce neck and shoulder muscle activity and discomfort. However, the effect of forearm support on wrist posture has not been examined. The aim of this study was to examine the effect of 3 different postures during keyboard use: forearm support, wrist support and "floating". The floating posture (no support) was used as the reference cond...