The management of femoral shaft fractures in the elderly poses special problems (Barry 1967) and it has been assumed that internal fixation is usually the treatment of choice (B#{246}hler 1968). Although there have been retrospective trials of operative and conservative treatment of femoral shaft fractures (McKeever 1945, Dencker 1965) none has been devoted specifically to the elderly. The purp...

This paper suggests a simple yet efficient experimental method to record the displacement of the shaft in a revolute joint with clearance. Two light and compliant cantilevers have been mounted on the rocker, each being instrumented with two strain gauges which can measure bending. These cantilevers are mounted in an orthogonal fashion, near the axis of the revolute joint, each touching the shaf...

simultaneous dislocation of shoulder and humeral shaft fracture is a rare injury, and there is no clear protocol for its treatment. herein we present a case of a 15-year-old boy, who suffered from a job-related accident and sustained fracture of humeral shaft associated with ipsilateral anterior shoulder dislocation and fracture of greater tuberosity 15 years ago. he received closed reduction o...

This study aims at studying the reliability evaluation for the marine propulsion shaft system under the severe sea conditions. The variations of the contact stress between the bearings and the marine propulsion shaft under the severe sea conditions are analyzed using the finite element simulation. The stress-strength interference theory is used to evaluate the reliability of the marine propulsi...

Background: This study evaluates submuscular locked plate in the pediatric femoral shaft fractures at the age from 6 to 12 years old. Methods: A prospective study was done on 30 patients with fracture shaft femur. 18 of them were males and 12 of them were females. Fixation of all cases was done with a submuscular locked plate using the cluster technique. Results: All fractures healed within 6 w...

Shaft vibrational frequency is a quantitative measurement of the rate of vibration (oscillation) of a shaft as expressed over a known unit of time. In the late 1970's a few individuals began working on developing a way to identify a quantitative measurement of shaft stiffness to be able to ensure a more accurate progression of stiffness through sets of golf clubs. Vibrational frequency became a...

Background: Respiratory problems are common after long bone fractures. The objective of the present investigation is to evaluate the effect of early fixation of femoral shaft fracture on the incidence of respiratory problems. Methods: The results of early and late stabilization of femoral shaft fractures were studied in 150 patients. The patients were divided into two groups according to the st...

background:proximal femoral shaft fractures are commonly associated with marked blood loss which can lead topostoperative acute anemia and some other complications.tranexamic acid (ta) is an antifibrinolytic medication that reduces intra-and postoperative blood loss and transfusionrequirements during some elective surgeries (1-3).the aim of this study is to evaluate the effect of intravenous tr...

in the diesel engine exhaust gas recirculation (egr) components, valve and connecting pipes are the critical components and fails often during new engine development. these components are important for meeting nox emissions norms. therefore design of these components should remain robust. but the challenge in design is compact packaging of complete egr components on the engine consequently vibr...

Abstract Siphon-shaft spillways can discharge large amounts of water down to the crest level in a narrow reservoir thanks siphonic pressures. However, cavitational pressures siphon-shaft limit operating head these spillways. An enlargement at shaft mouth reduce vacuum and velocities within flows, thereby removing risk cavitation occurring. In this study, four different enlarging profiles with v...