The effect of reaming velocity on the pressure distribution within the bone is investigated numerically by solving the full three-dimensional Navier-Stokes equations together with the continuity equation using the finite element technique. Viscosity is also varied to obtain a pressure envelop. It was found that all the experimental data follow the same trends as the envelopes predicted by the f...

BACKGROUND Active and young individuals with glenohumeral arthritis who are treated with total glenohumeral arthroplasty are at risk for loosening or wear of the prosthetic glenoid component. This study tests the hypothesis that patients with severe glenohumeral arthritis have improvement in self-assessed shoulder comfort and function at two to four years after treatment with the combination of...

Abstract This work investigates the drilling performance by reaming while (RWD) using a dual-body bit and compared it with conventional standard bit. The consisted of 2.45-in. pilot located at short distance ahead 2.47 × 3.97-in. reamer. Conducting series experiments simulation rig full monitoring sensors, we further studied as function between is greatly important parameter affecting mud diffu...

Seventeen femoral fractures occurred in 1,751 operations for total hip replacement. They usually occurred during dislocation of the hip, reaming of the shaft, or insertion of the femoral component, and were common in second operations. The short oblique fracture can be controlled by use of the standard implant, and the long oblique fracture by internal fixation. Fractures well below the implant...

This proposed method has to design and fabricate the Multipurpose Jig and Fixture, for that component which has been to reduce the manufacturing cycle time. When the component produced on a small size previously this is to produces the large quantities of requirements. The selective components requires for machining operations such as step milling, angle milling & boring and reaming. The few op...

BACKGROUND It is known that small alterations in tunnel positioning during anterior cruciate ligament (ACL) reconstruction significantly affect ACL length and tensioning patterns as well as alter force vectors and joint kinematics. PURPOSE To compare the amount of inadvertent posteriorization of the ACL tibial tunnel anatomy during transtibial ACL femoral reaming in the "over-the-top" positio...

The authors report the successful treatment of 19 patients (mean age 10 years) with active unicameral bone cysts using a combination of percutaneous reaming and injection of a mixture of demineralized bone matrix and autologous bone marrow. Follow-up ranged from 12 to 42 months (mean 28 months). All patients were asymptomatic at the latest follow-up. Two required a second intervention to accomp...