objective: the aim of this cross-sectional analytic study was to evaluate the diagnostic efficacy of panoramic-based indices of the mandible (mental index-mi, mandibular cortical index-mci and panoramic mandibular index-pmi) and to determine their correlation with bone mineral density (bmd) of the femoral neck and lumbar vertebrae (l2-l4) in order to assess the possibility of using these parame...

background: several systemic factors and hormones are thought to regulate the fracture healing process. vitamin d has emerged as a compound or hormone that actively participates in the regulation of calcium homeostasis and bone metabolism. objectives: the aim of this study is to determine the serum changes in the level of vitamin d during the acute healing period of tibial and femoral shaft fra...

Patient. We report the case of a 20-year-old caucasian male with an Ewing's sarcoma in the left upper femur. After induction chemotherapy, he underwent resection of the left upper femur and insertion of a cemented proximal femoral replacement. Four years later, he presented with a solitary bone metastasis in the right upper femur. He underwent further chemotherapy followed by resection and endo...

Femur fractures occur during broaching and impaction of the implant during hip arthroplasty. Prophylactic cerclage of the proximal femur with braided cable and steel wire has been shown to decrease hoop stresses and has been posited as a way to decrease the incidence of intraoperative fracture. In this biomechanical study, the authors investigated the strain across the proximal femur during bro...

PURPOSE Women with breast cancer are at increased risk for femur fracture. Contributing factors include estrogen deficiency, cancer-related therapies, or direct bone involvement. This study examines fracture subtypes in women with prior breast cancer experiencing a femur fracture. METHODS Women age ≥50 years old with a history of invasive breast cancer who experienced a femur fracture were id...

BACKGROUND In treatment of tumors, we usually reconstruct after resection of the entire femur using only metallic modular endoprostheses among many procedures and defined it as a total femur replacement. We studied the interrelation between the preservation of rectus femoris and the functional outcome after total femur replacement. METHODS We rated the functional outcomes of 21 patients who u...

BACKGROUND There is no accepted landmark for the mechanical axis of the femoral axis in sagittal plane in conventional total knee arthroplasty. METHODS As palpable anatomic landmarks of the femur, lateral epicondyle, and anterior margin of the greater trochanter were identified. The line connecting these two landmarks was defined as the "palpable sagittal axis". The mechanical axis of the fem...

PTH (0.5 unit/ml) and CT (0.5 unit/ml) strongly stimulated the in vitro growth of the chick embryo femur in terms of elongation and dry weight increase as well as an increase in the protein, hexosamine, hydroxyproline, DNA and RNA content of the femur. A synergistic effect was observed when PTH and CT were simultaneously added to the medium, suggesting that the mechanism of the growth stimulati...

For the purpose of fixing fractured distal femur, usually resorts to use metal internal fixation plates with all accompanying (supportive) devices such as screws, pins, and wires. These are manufactured according standard dimensions this means that they may not completely match surface femur for patients, especially if outer is complex own more geometry., femur. The complete mismatch, it occurs...

The optimal management of pathologic long bone lesions remains a challenge in orthopedic surgery. The goal of the current study was to investigate the effect of defect depth on the torsional properties of the distal femur. A laterally placed distal metaphyseal cylindrical defect was milled in the cortex of the distal femur in 20 composite models. The proximal extent of the defects was constant....