ANATOMY Â© 2004 The Medicine Publishing Company Ltd1ANAESTHESIA AND INTENSIVE CARE MEDICINE The sacrum is a large triangular bone formed from the five fused sacral vertebrae (Figure 1). Two rows of foramina on its dorsal and pelvic surfaces divide it into a median portion, the body and two lateral masses.
Edema or Ådema is an abnormal accumulation of fluid in the interstitium, located beneath the skin and in the cavities of the body, which can cause severe pain. Clinically, edema manifests as swelling. The amount of interstitial fluid is determined by the balance of fluid homeostasis; and the increased secretion of fluid into the interstitium, or the impaired removal of the fluid, can cause the condition. The word is from Greek Î¿á¼´Î´Î·Î¼Î± oÃ­dÄma meaning swelling.
A very common place to see edema is in the feet, ankles and lower legs. Edema is fluid build up which may occur in any part of your body. However, due of the effects of gravity, the fluid more commonly appears as painless swelling in the lower legs.ommon Causes of Peripheral Edema. As a person gets on in years, he or she is more likely to have a gathering of edema fluid in their lower legs when they stand or sit too long. They may also see a tightness and swelling the shoes and socks are removed at the end of the day.