For most children, the National Heart, Lung, and Blood Institute recommends one cholesterol screening test between the ages of 9 and 11, and another cholesterol screening test between the ages of 17 and 21.
Wiktionary (0.00 / 0 votes) Rate this definition: fixation (Noun). The act of fixing, or the state of being fixed or fixated. fixation (Noun). The act of uniting chemically with a solid substance or in a solid form; reduction to a non-volatile condition; -- said of gaseous elements. fixation (Noun). The act or process of ceasing to be fluid and becoming firm.
âInternal fixationâ refers to the steel rods, screws, or plates used to keep the bone fracture stable in order to heal the right way and to help prevent infection. Open reduction internal fixation can also refer to the surgical repair of a joint, such as a hip or knee replacement. The surgical procedure is performed by a doctor who specializes in orthopedics, which is a branch of medicine concerning the musculoskeletal structure of the body.