The eight small and complexly shaped carpal bones of the wrist articulate in six degrees of freedom with each other and to some extent with the radius and the metacarpals. With the increasing number and sophistication of studies of the carpus, a standardized definition for a coordinate system for each the carpal bones would aid in the reporting and comparison of findings. This paper presents a ...

UNLABELLED Bone resorption, in vitro, is often measured as the release of prelabelled 45Ca from neonatal mouse calvarial bones, or from fetal rat long bones. In this report we describe a technique to measure the breakdown of bone-matrix, in vitro. We also describe a new way to dissect neonatal mouse calvarial bones, in order to obtain large amounts of bone samples. Twelve bone fragments were di...

Bone strength, which is resistance to fracture, depends not only on the bone mass, but also on its spatial distribution (microand macroarchitecture) and the intrinsic properties of the materials that constitute the bone [1]. A particular feature of the bone is the ability to adapt its size and shape in response to mechanical loads, through the process of modeling achieved by the independent act...

BACKGROUND AND OBJECTIVES Deproteinization is an indispensable process for the elimination of antigenicity in xenograft bones. However, the hydrogen peroxide (H2O2) deproteinized xenograft, which is commonly used to repair bone defect, exhibits limited osteoinduction activity. The present study was designed to develop a new method for deproteinization and compare the osteogenic capacities of ne...

bone matrix gelatin (bmg) has been used for bone induction intramuscularly and subcutaneously by many investigators since 1965. more recently, some of the researchers have used bmg particles for bone repair and reported various results. in present study for evaluation of bone induction and new bone formation in parital defects, bmg particles were used in five groups of rats. the bmg was prepare...

BACKGROUND The effect of age on the bone mineral density and microarchitecture of the equine radius and tibia was investigated. Fifty-six bones from 15 horses aged four to 21 years were used. There were nine geldings and six mares, and none of the horses had any disease influencing bone properties. Xtreme computed tomography was used to evaluate a 9-mm segment of the diaphysis and metaphysis of...

Fibrous dysplasia is a benign tumor of bone, uncommonly affecting the maxilla, congenital, recurrent character and etiology unknown, caused by bone modeling disorder in which normal replaced immature fibrous tissue. The lesion may involve one or more bones being maxilla facial affected. We report case monostotic variety male patient complaining progressive swelling rt that compress inferior orb...

background: long-term glucocorticoid therapy causes secondary osteoporosis leading to pathological fractures. glucocorticoid action in bone is dependant upon the activity of 11β-hydroxysteroid dehydrogenase type 1 enzyme (11β-hsd1). piper sarmentosum is a local herb that possesses the ability to inhibit 11-βhsd1 enzyme activity. we aimed to determine the effects of piper sarmentosum water extra...

The histological diversity of the skeletal tissues of fishes is impressive compared with that of other vertebrate groups, yet our understanding of the functional consequences of this diversity is limited. In particular, although it has been known since the mid-1800s that a large number of fish species possess acellular bones, the mechanical advantages and consequences of this structural charact...