Bone growth in length occurs by interstitial growth of the cartilage of the epiphyseal plate, whereas bone growth in width is accomplished by appositional growth occurring deep to the periosteum. Osteoblasts derived from osteoprogenitor cells of the periosteum secrete bone matrix on the bone surface,...
Bone development is the formation and growth of bones. New bone is formed by the action of specialised cells called osteoblasts and osteoclasts, either by directly laying down bone tissue into connective tissue or forming it from cartilage, such as during growth in length of long bones. Latest...
Exponential advances have been made regarding computer/Internet technology in the past decade. This growth, in large part, can be attributed to greater acc... O Maressa Hecht,AC Voluse,W David,... - 《Cyberpsychology & Behavior the Impact of the Internet Multimedia & Virtual Reality on Behav...
Growth hormone (GH) signaling is essential for postnatal linear bone growth, but the relative importance of GHs actions on the liver and/or growth plate cartilage remains unclear. The importance of liver derived insulin like-growth factor-1 (IGF-1) for endochondral growth has recently been challe...
Amputation stump overgrowth in the child amputee is a significant clinical and biological problem. The mechanism by which a transected bone grows in length in the absence of a growth plate has not been described. Amputation stump overgro... DP Speer - 《Clinical Orthopaedics & Related Research》...
Although physical training has been shown to improve bone mass, the time of day to exercise for optimal bone growth remains uncertain. Here we show that engaging in physical activity during the early active phase, as opposed to the subsequent active or rest phase, results in a more substantial...
The Role of Bone Shape in Determining Gender Differences in Vertebral Bone Mass Dual-energy X-ray absorptiometry (DXA) measures of bone mineral density (BMD) in children fail to account for growth because bone depth is unmeasured. Whil... T Barlow,W Carlino,HZ Blades,... - 《Journal of ...
We found that weight and bone length did respond differently, as did males and females. In some cases, post-insult body mass surpassed controls, but long bone length in the same animal did not. Also, individual response to growth insults was variable: later rehabilitated groups had fewer ...
Subcutaneous growth hormone-releasing hormone therapy in growth hormone-deficient children: first year of therapy. The purpose of this study was to determine the efficacy and safety of GH-releasing Hormone [GHRH-(1-44)] therapy in GH-deficient children. Twenty previously untreated prepubertal children...
Although appositional bone growth occurred, it was still considerably less than the intrauterine rate (Fig. 2). Overall skeletal growth is documented by increases in length during the study period. The fact that BMC and appositional bone growth (BW) is decreased in these infants during a time ...