BACKGROUND Long-term studies of posterior cruciate ligament (PCL) reconstruction suggest that normal stability is not restored in the majority of patients. The Achilles tendon allograft is frequently utilized, although recently, the quadriceps tendon has been introduced as an alternative option due to its size and high patellar bone density. PURPOSE/HYPOTHESIS The purpose of this study was to...

While metal or plastic interbody spinal fusion devices are manufactured to appropriate mechanical standards, mechanical properties of commercially prepared structural allograft bone remain relatively unassessed. Robust models predicting compressive load to failure of structural allograft bone based on easily measured variables would be useful. Three hundred twenty seven femoral rings from 34 ca...

Background: The use of structural allografts is aimed to restore the resected bone segment in order to maintain enough bone stock for future revisions. The aim of this study was to describe the mechanical failures of Allograft Megaprosthesis Composite (AMC) revised to Modular Megaprosthesis (MMP) due to nonunion of the structural allograft in patients younger than 40 years. Material and methods...

PURPOSE To evaluate the effect of autogenous platelet-rich plasma (PRP) for fresh-frozen allografts in tibial defect reconstruction in rabbits. METHODS 40 adult New Zealand white rabbits underwent tibial defect reconstruction with autografts (n=12), allografts without PRP (n=12), or allografts with PRP (n=12) and were observed for 12, 16, and 24 weeks (4 for each period). Tibias of the remain...

Background. The objective of our study was to evaluate the stabilization of reconstructed long bones after metastatic tumor resection and defect filling with polymethyl methacrylate (PMMA) or bone allograft. Material and methods. We studied a group of 107 patients who underwent surgery between 1996 and 2004 (55 females and 46 males). A primary neoplasmatic focus was found after histopathologica...

Revision Total Knee Arthroplasty is often complicated by large bone defects in the distal femur and proximal tibia. These defects can be managed in a variety of ways including the use of allograft bone. The purpose of this study was to retrospectively evaluate the clinical outcome of revision total knee arthroplasty cases where allograft bone was used. Thirty revision TKA's (27 patients) perfor...

Introduction: Structural bone allografts are frequently used to reconstruct bone defects in the extremities as well as for spinal fusion surgery. Failed healing at the graft-host junction is one of the most frequent complications of allograft surgery. However, the factors that regulate healing and graft incorporation remain poorly understood. The goal of these studies is to examine the molecula...

A gunshot wound to the mandible frequently creates a comminuted fracture that can be debilitating for patient and challenging surgeon. In some instances, immediate open reduction rigid fixation is not possible, closed with intermaxillary employed. This may lead non-union or mal-union of segments. case report describes management bilateral mandibular angle fractures secondary injury. The were re...

Bone allografts are commonly used for surgical treatment of cancer patients. However, such complications as violation allograft fusion, its lysis and fractures, infection lead to additional research in this field medicine. Objective. To study changes biochemical osteogenesis markers under the action cytostatics on process incorporation bone allografts. Methods. The work was performed 20 male wh...