The skeleton of a child with osteogenesis imperfecta type III, resulting from the substitution of glycine 586 by valine in the triple helical domain of the alpha 2 (I) chain of type I collagen, was severely porotic but contained lamellar bone and Haversian systems. From early childhood, structural failure of the bone resulted in the disruption of growth plates, progressive bone deformities, and...

INTRODUCTION Bone electrical potentials change with the force applied. Also, fracture alters the bone electrical potential, so it becomes more electronegative. These potentials have an important role in fracture healing, bone growth and remodelling. Literature data on the influence of fracture operative treatment on bone electrical potentials, and possible consequences of this influence, are sp...

While there is no major controversy in managing stable fractures of the fingers, a consensus has not yet been reached in treating unstable fractures of the phalanges and metacarpals of the hands.1-3 Both static4 and dynamic splints5-7 have been used for treating selected cases of unstable phalangeal and metacarpal fractures, for which good outcomes are noted. However, for fractures with rotatio...

Background: Given the popularity of pterional craniotomy, numerous modifications have been made to prevent postoperative deformities. With advent titanium plates, fixation has become both simple and excellent. However, plates can cause skin problems, infection, or skull growth fail. Methods: To develop a simple, cost-effective, esthetically satisfactory method, without use non-metallic material...

Polylactic acid (PLA) has no osteoconductivity, causing the early failure of PLA implants. For obviating this problem, coating, rather than incorporation, with calcium phosphate is considered to be effective. In study, plates were coated granular carbonate apatite (CAp), inorganic component bone, using thermal fusion bonding method. The water contact angles CAp-coated (CAp/PLA) and 0.7° ± 0.1° ...

objective: osseous defects around dental implants are often seen when implants are placed in areas with inadequate alveolar bone, or around failing implants. bone regeneration in these areas using bone grafts or its substitutes may improve dental implants prognosis. the aim of this study was to prepare and characterize the bioactive glass nanopowder and development of its coating for treatment ...

INTRODUCTION: Osteosynthesis plates and screws are used in combination to fix complex fractures. These metallic fixation systems are used with success in healthy bone. But when important stresses apply on the bone-screw interface and when bone is weak, failure of the screw fixation may occur. An obvious mean to improve the fixation of a screw is to augment the surrounding bone with cement. Prev...

Bone strength depends on trabecular architecture, characterized by interconnected plates and rods. In osteoporosis, the plates become fenestrated, resulting in more rods that deteriorate and become disconnected. In men, hypogonadism is a common cause of osteoporosis. To determine whether male hypogonadism affects trabecular architecture, we selected 10 men with severe, untreated hypogonadism, a...