Total knee arthroplasty (TKA) is one of the most successful procedures in modern orthopedic surgery, providing high patient satisfaction rate. As a result, the number of patients undergoing TKA is increasing in number every year and more patients would be inclined to have the operation in near future . The demand for TKA is expected to grow 673% between 2005 and 2030. Knee surgeons are using mo...

statement of problem: thermal injury during dental implant placement and restoration is a clinical concern as it may cause bone damage and compromise osseointegration. the threshold level for heat-induced cortical bone necrosis is 47°c for 60 seconds. objectives: to measure the amount of heat transferred to the implant-bone interface when a two-piece or one-piece abutment was prepared in vertic...

The MAXIMUM CUT problem (MAX-CUT) is one of the simplest graph partitioning problems to conceptualize, and yet it is one of the most difficult combinatorial optimization problems to solve. The objective of MAX-CUT is to partition the set of vertices of a graph into two subsets, such that the sum of the weights of the edges having one endpoint in each of the subsets is maximum. This problem is k...

INTRODUCTION: Allograft reconstruction after resection of primary bone sarcomas has a non-union rate of approximately 20%. Achieving a wide surface area of contact between host and allograft bone is one of the most important factors to help reduce the non-union rate. We developed a novel technique of haptic robot-assisted surgery to reconstruct bone defects left after primary bone sarcoma resec...

(1) An incised wound semi-circular in shape, 4|inches in length, near the crown of the head, ou tiie left side of the median line; a portion of the skull (left parietal bone at its posterior inferior angle) by 2" having been entirely cut off in a slanting way, and the brain substance protruding through the cavity thus created. (2) Another wound, similar in shape and length to the above, but sit...

The Precision Freehand Sculptor (PFS) is a compact, handheld, intelligent tool to assist the surgeon in accurately cutting bone. A retractable rotary blade on the PFS allows a computer to control what bone is removed. Accuracy is ensured even though the surgeon uses the tool freehand. The computer extends or retracts the blade based on data from an optical tracking camera. Three users used each...

statement of problem: perforations are significant complications that can occur during root canal therapy and may result in the destruction of adjacent periodontal tissues. an ideal material for repairing a perforation should be biocompatible and have a high sealing ability. purpose: the aim of this study was to compare histologic tissue responses of experimentally induced pulp chamber perforat...

In order to develop a podiatric orthopaedic training simulator the obstacle of simulating podiatric bone surgery must be overcome. In order to simulate this surgery appropriately, it is necessary to be able to cut through a virtual representation of a patient’s foot on-screen in real-time. We investigate several methods of cutting through simulated objects in general, and evaluate their usefuln...