The Double Dynamic Martin Screw (DMS) ab 42.99 € als gebundene Ausgabe: Adjustable Implant System for Proximal and Distal Femur Fractures. Auflage 2008. Aus dem Bereich: Bücher, Wissenschaft, Medizin,
The Double Dynamic Martin Screw (DMS) ab 42.99 € als Taschenbuch: Adjustable Implant System for Proximal and Distal Femur Fractures. Softcover reprint of the original 1st ed. 2008. Aus dem Bereich: Bücher, Wissenschaft, Medizin,
Fracture to the neck of femur is frequently stabilised with a hip screw system, however the host bone is often weak or osteoporotic. This causes premature failure of the system, commonly by cut-out of the lag screw through the head of the femur. While augmentation of the fixation with bone cement improves the holding power and decreases failure rate, current methods of administering the cement are messy and inaccurate. This project proposes a lag screw design which allows for direct injection of the cement, via the lag screw itself, after the screw has been inserted and correctly positioned in the femur. A method is also suggested to reduce the risk of cement leakage into the joint space when the guide wire has punctured the head of the femur. The design uses a system of holes in the threaded section of a cannulated screw to allow delivery of cement to the desired area. Testing was conducted in a synthetic bone analogue as well as in cadaveric porcine femurs.
The fractures of the peritrochanteric region of the femur are one of the most common injuries seen in current orthopaedic practice. Incidence of these fractures has increased significantly during recent decades and this tendency will probably continue in near future due to rising age of population. Closed methods of treatment have shown higher mortality rates & have largely been abandoned. Rigid internal fixation and early mobilization has been standard method of treatment. There has been a long standing debate regarding the operative procedure of choice in these fractures. By comparing the sliding screw system (Dynamic Hip Screw) against the mini-invasive intramedullary nailing device (Proximal Femoral Nail) this study aims to throw light on the management of trochanteric fractures.
Bone fracture is one of the common traumas in today's medical field. The major challenge is to identify the suitable material of prosthetic plate and screws by the best combination of higher strength, lower weight, longer performance and reasonable cost implanted with fractured bone. Femur bone is considered a linear-elastic, isotropic and homogeneous material of calcium phosphate. It needs to support maximum weight of the body in between hip joint and knee joint during static loading condition. The objective of this study is to select the best suitable material of prosthetic plate and screws on the basis of strength and deformation for single and double fractured human femur bone at mid-shaft position in the presence of static loading. One of the most important steps in development of femur bone, prosthetic plate and screw generated with the help of products available in the market in Solidworks CAD software.