To experimentally verify a new test stand for investigating fatigue strength of plain bearing surface layer some biand three-metallic thin-walled bearing bushes have been tested. A lining of the bearing was made of CuPb30 alloy. PbIn7 overlay was employed for tree-layer bearings. Typical views of observed bearing surface fatigue failures are presented and analysed in the paper. The MWO test rig...

This paper reports the effects of carbon fiber-reinforced polymer (CFRP) length on the failure process, pattern and crack propagation for a strengthened concrete beam with an initial notch. The experiments measuring load-bearing capacity for concrete beams with various CFRP lengths have been performed, wherein the crack opening displacements (COD) at the initial notch are also measured. The app...

We studied the effect of 'dynamisation' on tibial fractures in six patients treated by the Dynamic Axial Fixator. In the early stages, peak cyclic movement at two to four weeks averaged 0.75 mm (0.19 to 1.02) on the medial side of the bone and 0.86 mm (0.21 to 1.25) on the lateral side. The amount of movement correlated with the applied load and the fracture stiffness. After unlocking the fixat...

OBJECTIVE To investigate the influence of the use of a rollator walking aid on assessment of gait and mobility. DESIGN Prospective, longitudinal study. SUBJECTS Geriatric patients during inpatient rehabilitation (n=109; mean age 83.1 years). METHODS Assessment at the beginning and prior to discharge from rehabilitation using: gait-analysis (GAITRite®, speed, cadence, stride-time, stride-l...

Atypical femoral fractures are uncommon fractures that are often associated with extended bisphosphonate use. They occur in the proximal or middle diaphyseal portion of the femur with a short oblique pattern and have relatively thickened cortices. Prodromal pain symptoms vary and bilateral involvement is common. Because delayed or complicated healing adversely affects treatment, fixation with a...

BACKGROUND A variety of methods has been described to stabilise periprosthetic fractures around total knee arthroplasty (TKA). Our report offers a review of the actual strategies in the reduction and fixation of these fractures. Surgical treatment should be based on the following four steps:Diagnostics: By taking the patients' history together with an X-ray of the knee and femur, the fracture i...

PURPOSE This study was aimed to determine whether a short period of maxillomandibular fixation (MMF) followed by an arch bar splint wired to the lower jaw is a suitable alternative to conventional MMF for treatment of fractures of the mandibular tooth-bearing area. PATIENTS AND METHODS Thirty patients with mandibular fractures associated with no other facial fractures were selected. They were...

Introduction: Management of pathological diaphyseal fractures secondary to osteomyelitis in children still remains a nightmare for the treating orthopedic surgeon owing to the highly unpredictable clinical course and lack of certainty in achieving successful results. This study highlights the potential role of rail fixator in the management of pathological femur fracture secondary to osteomyeli...