Blood Supply of Long Bones

The blood supply of developing long bones with special reference to the metaphyses.

Humphry (1858) described a dual blood supply to any long bone, periosteal vessels supplying the compact bone and the nutrient artery supplying the marrow. Weinmann and Sicher (1947) pointed out that the nutrient artery also supplied the central part of the metaphysis, its more peripheral parts being supplied by metaphysial arteries derived from the periosteum. Trueta and Harrison (1953) believe...

Blood and bones

Erythropoietin (EPO) is a glycoprotein that is critical for the regulation of red blood cell production. During embryonic development, Epo is mainly expressed in the fetal liver. However, as hematopoiesis switches sites from the fetal liver to the bone marrow, peritublular interstitial cells of the kidney support EPO production. Epo expression is tightly regulated by spatial, temporal and envir...

Resection of the Long Bones

Make No Bones about It: Long Bones Scale Isometrically

Long bones are far from being simple cylinders, so how is the relative positioning of their various features maintained during growth? A new study shows that growth is isometric and that drift from the correct position is minimized. Read the Research Article.

A report of anomalous renal blood supply

Vascular variations and the accidental cutting of veins and arteries potentially create problems during surgery and medical treatment. The surgeon's awareness of a vascular variation in the kidneys is essential during renal surgery and transplantation, color Doppler imaging, gonadal surgery and in the presence of an abdominal aortic aneurism. This awareness can improve the patient's recove...