Abstract Background This study compared the biomechanics of artificial pedicle fixation in spine reconstruction with a 3-dimensional (3D)-printed prosthesis after total en bloc spondylectomy (TES) by finite element analysis. Methods A thoracolumbar (T10–L2) model was developed and validated. Two models T12 TES were established combination different methods: Model consisted long-segment posterio...

OBJECTIVE To evaluate the results obtained using local myocutaneous rotation flaps in cases of wound dehiscence after total knee arthroplasty. METHODS Patients undergoing these surgical procedures were selected in the 2000-2012 period. The nine selected cases during this period were subjected to flap coverage due to skin dehiscence associated with infection. In eight cases we used rotation fl...

INTRODUCTION: Polyethylene wear is a recurrent problem in joint arthroplasty. In addition to permanent deformation or complete destruction of the component, small debris particles are also associated to inflammation reaction of the surrounding bone, eventually leading to the failure of the bound between the implant and the host bone, and implant loosening. In anatomic total shoulder arthroplast...

INTRODUCTION Throughout history, many attempts to cure complete impotence have been recorded. Early attempts at a surgical approach involved the placement of rigid devices to support the natural process of erection formation. However, these early attempts placed the devices outside of the corpora cavernosa, with high rates of erosion and infection. Today, most urologists in the United States no...

Seventy-one Geomedic total knee replacements were reviewed retrospectively at a maximum of eight and a half years. The prosthesis was found to be successful in its primary aim of relieving pain. However, there was an overall failure rate of 18.3%. Analysis of the results by an actuarial method allowed comparison with other prostheses. The factors involved in failure are discussed.

The evaluation of contact areas and pressures in total knee prosthesis is a key issue to prevent early failure. The first part of this study is based on the hypothesis that the patterns of contact stresses on the tibial insert of a knee prosthesis at different stages of the gait cycle could be an indicator of the wear performances of a knee prosthesis. Contact stresses were calculated for a mob...

BACKGROUND Total hip arthroplasty is a successful surgery, that fails at a rate of approximately 10% at ten years from surgery. Causes for failure are mainly aseptic loosening of one or both components partially due to wear of articular surfaces and partially to design. The present analysis aimed to identify risk factors and quantify their effects on aseptic failure. METHODS Multivariate surv...

Background: Complication rates reported for contemporary knee reconstruction limb salvage surgery (LSS), an alternative to amputation patients with bone tumours of the proximal tibia and distal femur, have not been extensively explored in China. Objective: Functional outcomes, survival, prosthesis failure, and complication rates were investigated in Chinese patients with malignant or aggressive...