Minimally invasive arthroscopic procedure to remove articular cartilage in the knee. Articular cartilage is a firm rubbery tissue that covers the ends of bones. It provides a smooth gliding surface for joints and acts as a cushion between bones. Cartilage can break down due to overuse or injury.
While normal atmosphere contains between 20.8 and 21 percent oxygen, OSHA defines as oxygen deficient any atmosphere that contains less than 19.5 percent oxygen, and as oxygen enriched, any atmosphere that contains more than 22 percent.
First Known Use of BIOCHEMICAL OXYGEN DEMAND. noun biochemical oxygen deÂ·mand \-di-Ëmand\. : the oxygen used in meeting the metabolic needs of aerobic microorganisms in water rich in organic matter (as water polluted with sewage)âcalled also biological oxygen demand, oxygen demand.efinition of BIOCHEMICAL OXYGEN DEMAND. : the oxygen used in meeting the metabolic needs of aerobic microorganisms in water rich in organic matter (as water polluted with sewage). ADVERTISEMENT. noun biochemical oxygen deÂ·mand \-di-Ëmand\.