<p>Technological developments in the field of railway signaling have allowed more and flexibility management rail traffic, especially with computer interlocking. However, differences principles from one country to another as well structure interlocking software communication protocols depending on suppliers lead interoperability difficulties at borders between Some deployed projects deal ...

This study was designed to compare bone mineral density, periosteal callus production, new bone formation, bone porosity, histologic appearance, and union of mid-diaphyseal segmental allografts of the femur stabilized with an interlocking nail technique in a canine model 6 months after the procedure. An in vivo study was performed to compare the effects of augmenting interlocking nail fixation ...

PURPOSE To assess the clinical outcome of unreamed intramedullary interlocking nailing in open fractures of tibia, and to evaluate the incidence of complications in these open fractures as a result of the unreamed intramedullary nailing. METHODS Between June 1999 and May 2000, a total of 60 cases of open tibial shaft fractures were operated on with unreamed interlocking nails at Safdarjung Ho...

This paper examines the network of personal contacts, created by interlocking directorates, among all board members of the Top 500 publicly listed Australian companies. In the past it has been difficulty to analyse such sparse networks, however recent advances in our understanding of the 'small world' phenomenon and the application of random graph theory to large networks provide new tools to m...

Primary tasks for clinical directors are to disseminate information to colleagues, provide feedback to senior professional managers, and to play key roles in strategic planning and resource allocation in health services. These tasks are seen to reduce barriers between clinicians and management. The application of clinical directorates across healthcare organisations is inconsistent and ambiguou...

BACKGROUND Acetabular reinforcement devices (ARDs) are frequently used as load-sharing devices to allow allograft incorporation in revision hip arthroplasty with massive acetabular bone loss. The key to a successful reconstruction is robust fixation of the device to the host acetabulum. Interlocking fixation is expected to improve the initial stability of the postoperative construct. However, a...

Background: Newer generation intramedullary (IM) tibial nails provide several distal interlocking screw options. The objectives were to determine: 1) if the new oblique interlocking option provides superior stability, 2) which screw orientation/ configuration is the most biomechanically stable, and 3) if three distal interlocking screws provide better stability. Methods: A preliminary experimen...

BACKGROUND Distal interlocking screw insertion in intramedullary nailing of long-bone fracture is a challenging task for orthopedic surgeons. It is difficult particularly when the surgeon is in his learning stage or when image intensifier is not available. We describe a radiation-free technique of distal interlocking screw insertion which is easy and practicable. MATERIALS AND METHODS In this...

Retrograde interlocking nail was used as the method of fixation in 35 different cases of combination of complex femoral fractures. We performed this procedure in fractures of femoral shaft associated with fracture neck femur, pathological fractures of proximal third of femur with trochanteric pathology, ipsilateral fracture of femur and tibia in polytrauma cases with multiple other injuries, in...

The North-American Institutes in Mathematical Sciences meet at least once a year in January when they co-organise the Open House of the Institutes at the joint Mathematics Meeting of the American Mathematical Society (AMS) and the Mathematical Association of America (MAA). Moreover, the worldwide major research institutes in mathematical sciences circulate regularly among themselves the list of...