Abstract Background Superior biomechanical performance of tapered interference screws, compared with non-tapered reference to the anterior cruciate ligament (ACL) reconstruction process, has been reported in literature. However, effect screw’s body slope on initial stability ACL is poorly understood. Thus, main goal this study was investigate reconstructed ACL. Methods Based best screw-bone tun...

This report describes an eddy current system for locating distal transverse screw holes of an intramedullary nail. In fracture surgery, screw holes on an intramedullary nail are in invisible situation. Although conventional X-ray methods can visualize screw holes in bone, they pose a danger due to X-ray exposure. Therefore, a system to find screw holes without X-ray exposure is required. We sol...

The locking compression plates (LCP) are efficient tools in open reduction and internal fixation (ORIF), especially in osteoporotic bones. Two important factors of screw density and screw position can affect the functionality of the bone plate. Several studies have assessed the influence of the screw configurations on the bone-plate stiffness, but the effects of screw positions on the interfrag...

Bone cement augmentation of pedicle screw is an important surgical procedure for osteoporotic vertebral collapse, preventing screw loosening, migration or back-out. Bone cement leakage may develop and mostly does not compress the peripheral tissue of the vertebral body including the spinal cord. However, to our best knowledge, bone cement leakage into the inferior vena cava during cement augmen...

The Locking Compression Plate (LCP), in combination with the LISS and the PHILOS, is part of a new plate generation requiring an adapted surgical technique and new thinking about commonly used concepts of internal fixation using plates. The following guidelines are needed to avoid failures and possible complications in the hands of surgeons not yet confident with the new implant philosophy. The...

1. Most of Schatzker Type II and Type III tibial plateau fractures are seen in osteoporotic bones in older age and are comminuted most of the times which have been excluded from your study. 2. The diameter of the solid inner piston is 10 mm may not be sufficient to elevate comminuted fragments. 3. Why not use bone graft to support elevated bone fragments because we are not sure if the screw can...

Screw and laser (SL) column by making screw threads and forming small holes using laser irradiation on the base metal and conventional beads coating (BC) columns were embedded into the shaft of canine femurs, and compared the implant fixation to the host bone. The interfacial strength in SL columns was almost equivalent as BC columns, and bone-column contact rate was higher than BC columns sign...

Anterior cruciate ligament (ACL) reconstruction using four-strand hamstring graft with round-headed, cannulated, interference (RCI) screw fixation requires osteointegration of the tendon graft. This report describes the histology at the bone-tendon junction of two specimens retrieved from patients undergoing revision surgery after traumatic mid-substance ACL graft rupture at 6 and 10 weeks afte...

A novel cortical bone trajectory (CBT) screw technique provides an alternative fixation technique for lumbar spine. Trajectory of CBT screw creates a caudo-cephalad path in sagittal plane and a medio-lateral path in axial plane, and engages cortical bone in the pedicle. The theoretical advantage is that it provides enhanced screw grip and interface strength. Midline lumbar fusion (MIDLF) is com...

We describe a case of an ASNIS III 5.0 mm partially threaded cannulated screw unthreading itself as it was being inserted during fracture fixation of a humerus. The majority of complications associated with cannulated screws involve breaking of the screw, as opposed to unthreading. We believe that the self tapping design of the screw, in combination with the cannulated design, creates a potenti...