aneurysmal bone cyst (abc) is blood filled expansile cystic lesion that most commonly occurs in patients during the second decade of their lives. traditionally it has been described as a benign lesion but can be locally aggressive and result in the destruction of the involved bone. treatment methods include surgical excision and curettage with or without bone grafting. we report a proximal femu...

introduction we report a case of non-:union: with severe shortening of the femur following diaphysectomy for chronic osteomyelitis. case presentation a boy, aged 16 years presented with a dangling and excessively short left lower limb. he was using an elbow crutch in his right hand to help him walk. he had a history of diaphysectomy for chronic osteomyelitis at the age of 9. examination reveale...

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...

Objective: Femur is the strongest, longest and heaviest bone in the human body. Due to the great importance of femur in human body, its injury may cause large numbers of disabilities and mortality. Considering various effective parameters such as mechanical properties, geometry, loading configuration, etc. can propel the study to the trustable results.. Methods: A 3D finite element model of the...

background: revealing data on the role of vitamin d and calcium supplementation in bone health has led some to suggest that vitamin d and calcium treatment could also play a role in protecting bone against microgravity-induced mineral loss. objectives: the aim of the present study was to investigate the effects of vitamin d and calcium administration on microscopic and densitometric changes of ...

background: osteoporosis is a disabling disease characterized by compromised bone strength, which predisposes a patient to increased risk of fracture. the aim of this study was evaluation the pattern of bone mass in iranian healthy population. methods: the study was performed between december 2000 and may 2001 on one thousand three healthy iranian sub jects who currently live in tehran. they we...

Objective- The aim of this study was to determine the age of physical maturity and evaluation of radiology and histology of hind limb ossification centers in pigeon. Design- Fundamental study. Animals- 14 pigeons. Procedures- These pigeons were cultivated in identical and standard conditions and radiological and histological tests performed every 7 days to 91 days. Resu...

Background: Fluoride (F&minus) is a trace element that is incorporated into bone mineral during bone formation. This study assessed the effect of increasing Fluoride doses on the bone formation and microarchitecture on the Femur of rats by histological, and histometrical methods. Materials and Methods: A total of 16 rats was divided into one group of control and three groups of animals that re...