Osteoporosis is a characterized by low bone mass and microarchitectural deterioration, with a consequent increase in bone fragility [1]. Bone strength impairment leads to an increased risk of fracture, as strenght reflects the integration of bone quantity (bone mineral density, BMD) and bone quality [2]. Common sites of osteoporotic fractures are spine, hip, distal forearm and proximal homerus....

The objective of this study was to evaluate right proximal femur shape as a risk factor for incident hip fracture using active shape modeling (ASM). A nested case-control study of white women 65 years of age and older enrolled in the Study of Osteoporotic Fractures (SOF) was performed. Subjects (n = 168) were randomly selected from study participants who experienced hip fracture during the foll...

It is a huge stress that remaining screws in the bone cannot be seen from the bone surface to remove the screw with fluoroscopy. Sometimes 2D fluoroscopy technique is difficult to remove hidden screws or metal pieces. To seek the hidden screw, skin incision, cortical bone loss and weakness of the long bone shaft will be increased. No case of total hip arthroplasty with screw removing assisted o...

BACKGROUND Possible immunization to blood group or other antigens and subsequent inhibition of remodeling or incorporation after use of untreated human bone allograft was described previously. This study presents the immunological, clinical and radiological results of 30 patients with acetabular revisions using fresh frozen non-irradiated bone allograft. METHODS AB0-incompatible (donor-recipi...

Pull out tests for bone anchors used in surgical robotics were performed to prove the strength of the bone anchor -bone combination. Forces and displacement were measured to evaluate the suitability of the bone anchors as a connection between a surgical robot and bone. A universal experimental setup was designed to conduct the pull out tests. As specimens, human cranial cadaver bone, porcine ca...

Effects of Wear Particles Generated at the Interface Between Total Hip Stem and Bone Cement on the Cytokine Release of Human Osteoblasts Robert Lenz1, Wolfram Mittelmeier1, Doris Hansmann1, Barbara Nebe2, Rainer Bader1 1Department of Orthopedics, University of Rostock, Rostock, Germany; 2Departmant of Internal Medicine, Cellular Biology, University of Rostock, Rostock, Germany rainer.bader@med....

Hip arthroplasty or hip replacement is a surgical procedure by which damaged cartilage and bone are removed from the joint replaced implants. performed in order to achive painless normal movements. Obesity characterized excessive accumulation of fat inside an organism it affects occurance arthrosis. Obese people make up 30% population developed countries. A vast majority recent research publica...

As the indications for total hip arthroplasty increase, the prevalence of extensive proximal femoral bone loss will increase as a consequence of massive osteolysis, stress shielding and multiple revisions. Proximal femoral bone stock deficiency provides a major challenge for revision hip arthroplasty and is likely to account for a significant future caseload. Various surgical techniques have be...

Clinical outcome of cemented implants to revision total hip replacement (THR) is not as satisfactory as primary THR, due to the loss of bone stock and normal trabecular pattern. This study evaluated a bioactive bone cement, strontium-containing hydroxyapatite (Sr-HA) bone cement, in a goat revision hip hemi-arthroplasty model, and compared outcomes with polymethylmethacrylate (PMMA) bone cement...

One of the main limitations, when studying cancer-bone metastasis, is the complex nature of the native bone environment and the lack of reliable, simple, inexpensive models that closely mimic the biological processes occurring in patients and allowing the correct translation of results. To enhance the understanding of the mechanisms underlying human bone metastases and in order to find new ther...