Densities of osteons and osteon fragments at the midshafts of the femur, tibia, fibula, humerus, radius, ulna and clavicle are examined in a sample of contemporary human males and females (n = 39; 23 female, 16 male), with comparative data derived from one specimen each of Gallus gallus and Felis silvestris catus. Results demonstrate that there are significant differences in mean complete and f...

An experiment is described which tests for visible and invisible mutants in mice treated with four different doses each of the contraceptives Gynanovlar and Lyndiol. The results show that there is no reason to suppose that either substance has an appreciable mutagenic effect, expressed as an increase of antenatal and postnatal lethals or visibles. The substrain CBA/CagCam, used throughout, has ...

This retrospective study aimed to identify and classify fractures in the appendicular axial skeletons of birds from Cariamidae Falconidae families presented a referral centre. Twelve thirteen adult red-legged seriemas (Cariama cristata) had skeleton one an fracture. All occurred pelvic limbs, but bird also thoracic limb Among long-bone fractures, ten were tibiotarsus. these six comminuted, two ...

Of 290 Ugandan children and adolescents with proven Burkitt's lymphoma 11 had lesions in the long bones or the pelvis. These started in the medulla as small osteolytic foci which coalesced and penetrated the cortex causing subperiosteal new bone formation in layers or spicules, and giving rise to large soft-tissue masses. Common sites were the femoral and tibial diaphyses and the metaphyses aro...

Aristaless-related proteins are structurally defined by the presence of a paired-type homeodomain and an additional conserved domain, known as aristaless domain or OAR-domain. These proteins can be further categorized in three groups (Int. J. Dev. Biol., 43 (1999) 651). Group-I aristaless-related genes are linked to functions in the development of the craniofacial and appendicular skeleton and ...

¾ In general, densitometry techniques can be performed in either the axial or the appendicular skeleton, depending on the modality employed. ¾ Peripheral measurements, performed in the appendicular skeleton, help to predict the risk of fracture, however, they are less sensitive for the monitoring of therapy than are measurements in the axial skeleton because changes due to age, therapeutic inte...

Palaechthonid plesiadapiforms from the Palaeocene of western North America have long been recognized as among the oldest and most primitive euarchontan mammals, a group that includes extant primates, colugos and treeshrews. Despite their relatively sparse fossil record, palaechthonids have played an important role in discussions surrounding adaptive scenarios for primate origins for nearly a ha...

OBJECTIVE To evaluate the factors that determine bone mineral density at axial and appendicular sites in normal men. DESIGN Measurement of bone mineral density of the radius by single photon absorptiometry and of the lumbar spine and hip by dual photon absorptiometry to assess their relation with various determinants of bone mineral density. Dietary calcium was assessed from a questionnaire v...

This report described radiographic and CT features of atypical diffuse idiopathic skeletal hyperostosis in a 5 year-old, female Shih-tzu showing marked proliferative bone lesions in the appendicular skeleton with minor spinal changes. Continuous or flowing bony bridge formation of vertebrae is used as the gold standard for diagnosing diffuse idiopathic skeletal hyperostosis. However, this crite...