We introduced several variables in an animal model of anterior cruciate ligament (ACL) reconstruction to determine the best parameters for surgery in humans. We divided 130 LYD pigs into two groups depending on whether the femoral tunnel goes through the medial tibial tunnel or through the medial fossa of the knee joint. Each subgroup was further divided. Four weeks after surgery the knee speci...

Ceramic post-and-core systems offer biocompatibility, aesthetics, reinforcement of the remnant root, and prosthesis retention. Aesthetic posts-and-cores contribute to the optical properties of the overlying restorations when metal-free crowns are used. This article illustrates the use of these materials to provide strength and aesthetics during the restoration of endodontically treated teeth. T...

Cell motility proceeds by cycles of edge protrusion, adhesion, and retraction. Whether these functions are coordinated by biochemical or biomechanical processes is unknown. We find that myosin II pulls the rear of the lamellipodial actin network, causing upward bending, edge retraction, and initiation of new adhesion sites. The network then separates from the edge and condenses over the myosin....

Figure 2. Specimen mounted on the MTS. Intramedullary nails with distal interlocking screws locked to the nail may have higher fatigue strength in comminuted supracondylar femur fractures McDonald, E;, Fischer, J; Bartlett, T; Buckley, J.M; Pekmezci, M, +Kandemir, U +Biomechanical Testing Facility, UCSF/SFGH Orthopaedic Trauma, University of California at San Francisco, San Francisco, CA, USA D...

Introduction A serious concern in biomechanical failure an empirical obs treated teeth should p crowns; while even caries can be restor materials. Whether fracture strength be teeth has long been a It has been postulat structure from endo removal significantly the greater the loss o dentin the greater sus Sedgley found no between the biomec endodontically treate concluded that root make teeth m...

Figure 4 –Typical failures of the plugged (left), screw only (center) and unplugged (right) comparison groups. Can Fatigue Strength of Locking Plates be Improved by Plugging the Unfilled Screw Holes in Comminuted Supracondylar Femur Fractures McDonald, E; Firoozabadi, R; Nguyen, TQ; Buckley, J.M; +Kandemir, U +Biomechanical Testing Facility, UCSF/SFGH Orthopaedic Trauma, University of Californi...

STUDY DESIGN Cadaveric single vertebrae were used to evaluate vertebroplasty as a prophylactic treatment and as an intervention for vertebral compression fractures. OBJECTIVE To investigate the biomechanical characteristics of prophylactic reinforcement and postfracture augmentation of cadaveric vertebrae. SUMMARY OF BACKGROUND DATA Percutaneous vertebroplasty is a treatment option for oste...

Important kinesiology parameter which we track during sport training and competition is muscle force, which in biomedical term represents maximal muscle concentration under maximal pressure expressed in watts. Goal of Research was to estimate muscle strength of important muscle groups of parachutes, muscle flexor of under leg, underarm and but adductor and upper arm during sport parachutist jum...

Sequenced physiologic muscle activations in the upper and lower extremity result in an integrated biomechanical task. This sequencing is known as the kinetic chain, and, in upper extremity dominant tasks, the energy development and output follows a proximal to distal sequencing. Impairment of one or more kinetic chain links can create dysfunctional biomechanical output leading to pain and/or in...