We present a 44-year-old female patient with recurrent fragility fractures including an intercondylar femoral fracture and with normal planar bone densitometry. Diagnosis of hypophosphatasia was suggested by low volumetric cortical bone mineral density and laboratory findings. DNA sequencing revealed heterozygous mutations in the exons 5, 6 and 9 of the ALPL gene, thus confirming the suspected ...

BACKGROUND AND PURPOSE There have been few prospective studies examining young and middle-aged patients with hip fracture. We therefore investigated background data, risk factors, and the trauma mechanism in young and middle-aged patients with femoral neck fracture. PATIENTS AND METHODS 185 patients, 27 young (20-49 years old) and 158 middle-aged (50-69 years old) were prospectively included ...

The novel coronavirus-induced infection (COVID-19) was declared a pandemic by the World Health Organization onMarch 11, 2020. Iran is one of the countries with a high incidence of COVID-19 infection.Data on three patients with fragility hip fracture and COVID-19 infection were collected from one hospital located inBadrud, Isfahan, Iran, from March 1, 2010, to March 30, 2020. A...

Sacral fracture commonly results from high-energy trauma. Most insufficiency fractures of the sacrum are seen in women after the age of 70. Fractures of the sacrum are rare and generally combined with a concomitant pelvic fracture. Transverse sacral fractures are even less frequent which constitute only 3-5% of all sacral fractures. This type of fractures provide a diagnostic challenge. We repo...

this study was conducted in order to evaluate the effects of long term ageing on toughness andresilient modulus of asphalt concrete mixtures containing electric arc and basic oxygen furnacesteel slags. after initial evaluation of the properties of steel slags using x-ray diffraction andscanning electric microscope, eleven sets of laboratory mixtures were prepared. each set wastreated replacing ...

Addition of titanium (Ti) to ASTM A710 Grade B Cu-precipitation-strengthened steel significantly increases the impact absorbed fracture energy and reduces the ductile-to-brittle transition temperature. The effect of Ti correlates with the reduction of the amount of pearlite in the ferritic microstructure. A thorough study of the mechanical properties of Ti-modified A 710B steel is presented. In...