BACKGROUND The purpose of this study was to design a customized fixation plate for mandibular angle fracture using topological optimization based on the biomechanical properties of the two conventional fixation systems, and compare the results of stress, strain and displacement distributions calculated by finite element analysis (FEA). METHODS A three-dimensional (3D) virtual mandible was rec...

The authors report on the retrospective follow-up of 9 patients (6 women and 3 men) who underwent a mini-arthrotomy ankle arthrodesis by means of small incisions for exposure, cartilage resection, and internal fixation with crossed interfragmental compression screws. Patients were kept non-weight-bearing in a short leg cast for 12 weeks postoperative. At a mean follow-up of 55 months, outcomes ...

The intralaminar screw construct has been recently introduced in C6-C7 fixation. The aim of the study is to compare the stability afforded by three different C7 posterior fixation techniques using a three-dimensional finite element model of a C6-C7 cervical spine motion segment. Finite element models representing three different cervical anchor types (C7 intralaminar screw, C7 lateral mass scre...

To compare the mechanical effectiveness of a new conical screw design with a conventional cylindrical screw design, the screw insertion time, torque, and pull-out strength of single-pedicle screw and triangulated-pedicle screw constructs of each type of screw were compared in human cadaveric vertebral bodies. The time required to insert the conical screws was less than that required for cylindr...

PURPOSE To review the results of indirect reduction and mini-incision dynamic condylar screw (DCS) fixation for comminuted subtrochanteric femoral fractures. METHODS 29 men and 14 women aged 25 to 65 (mean, 44) years with comminuted subtrochanteric femoral fractures underwent indirect reduction and mini-incision DCS fixation. Fractures were classified according to the AO classification (10 ty...

BACKGROUND Numerous condylar repositioning methods have been reported. However, most of them are 2-dimensional or are complex procedures that require a longer operation time and a highly trained surgeon. This study aims to introduce a new technique using a condylar repositioning plate and a centric relation splint to achieve a centric relationship. METHODS We evaluated 387 patients who had un...

Minimally-invasive techniques for transforaminal lumbar interbody fusion have been shown to reduce intra-operative blood loss, muscle injury, post-operative pain and length-ofstay and expedite recovery compared to the open technique [1-11]. The main drawback has been increased intra-operative radiation exposure due to reliance on bi-planar fluoroscopy that is required to compensate for diminish...