Intramedullary (IM) pinning is a biological method of fracture fixation; but associated with complications ofpin migration, proximal fragment collapse and rotational instability. The study aimed to design double threaded(DT) IM pin evaluated its biomechanical resistance axial compression load in comparison end-threaded(ET) simple Steinman (SS) on the canine long bone gap model. DT was designedc...

Introduction. Skills training using artificial bones became more critical in response to the Orthopedic surgical restriction caused by COVID-19 pandemic. To cut expenses of buying commercial bones, Ilizarov Limb Reconstruction Service has decided fabricate its for skills training. Objective. determine if resin-coated polyurethane (PU) rigid foam is a suitable, low-cost alternative bone. Metho...

Objective: To observe the effects of repetitive brief ischemia on promoting bone healing in a rat tibia fracture model. Methods: To achieve the aim of the study, rats with right tibia closed fractured were administered homemade tourniquet placed on right thigh 10 min inflated/10 min deflated 3 times ischemia treatment at three interval time (24 hours, 48 hours, and 72 hours) for 5 consecutive w...

The aim of this study was to evaluate the bone regeneration of hydroxyapatite (HA)/alumina bilayered scaffold with a 3 mm passage-like medullary canal in a beagle tibia model. A porous HA/alumina scaffold was fabricated using a polymeric template-coating technique. HA/alumina scaffold dimensions were 10 mm in outer diameter, 20 mm in length, and with either a 3 mm passage or no passage. A 20 mm...

Primary angiosarcoma of bone is very rare.It occurs more commonly in middle-age and later life, with a male predominance in the ratio of 2:1. Angiosarcoma of bone has a tendency to involve the long tubular bones, and multifocal involvement is common. Here, we present a case of a 69-yr-old man in Shahid Sadooghi Hospital of Yazd in 2014 that had angiosarcoma of the left tibia. He was treated wit...

tion. The knee joint, was swollen; the swelling being more marked at the upper end of the tibia, and in the popliteal fossa. The part was tender as a whole, but, most intensely so on the outer side of the cond}de of the tibia. There was a sinus, situated on the outer side of the upper end of tibia, about li inches long, leading to a cavity in the upper end of that bone and discharging thin vell...

We measured a cross-section of able-bodied (AB) men (n = 175) and men with chronic spinal cord injury (SCI) (n = 33) residing in the community, 14 to 65 years old, to identify associations between dietary factors, physical activity, health status, and mechanical properties of long bones assessed by phase velocity measurement of flexural waves in the tibia during the second to seventh decades. T...

OBJECTIVES Assessment of additive impact of alfacalcidol 1 μg daily (Alfa) on bone mineral density (BMD) and on bone strength in postmenopausal women treated with alendronate 70 mg weekly + 500 mg calcium daily. SUBJECTS AND METHODS In a randomized, double-blind, placebo controlled study, 279 postmenopausal women with osteoporosis or osteopenia participated (intention to treat analysis [ITT];...

Epidemiological studies show that high circulating levels of adiponectin are associated with low bone mineral density. The effect of adiponectin on skeletal homeostasis, on osteoblasts in particular, remains controversial. We investigated this issue using mice with adipocyte-specific over-expression of adiponectin (AdTg). MicroCT and histomorphometric analysis revealed decreases (15%) in fracti...

Disuse induces a rapid bone loss in adults; sedentarity is now recognized as a risk factor for osteoporosis. Hypoactivity or confinement also decrease bone mass in adults but their effects are largely unknown and only few animal models have been described. We have used 10 chickens of the rapidly growing strain 857K bred in a large enclosure (FREE group); 10 others were confined in small cages w...