Category: F

  • Fenestrated tracheostomy tube

    A double-cannulated tracheostomy tube that allows patients to breathe through the mouth or nose when the inner cannula is removed. The tube has an opening in the posterior wall of the outer cannula above the inflatable cuff.  

  • Femur length measurement

    An assessment made during a fetal ultrasound that uses the length of the femur to estimate the growth of the fetus, especially to see if there is evidence of intrauterine growth retardation (IUGR).  

  • Femoral reflex

    Extension of the knee and flexion of the foot resulting from irritation of the skin over the upper anterior third of the thigh.  

  • Female genital cutting

    Partial or complete surgical removal of the clitoris, a traditional practice in some African, Middle Eastern, and Southeast Asian cultures. The cutting usually is performed between the ages of 1 week and 14 years. The procedure is performed by nonmedical personnel without benefit of anesthesia or sterile conditions. The most common procedures are removal of…

  • Felis domesticus

    The scientific name for the domestic cat whose dander is a source of allergenic protein. Cat-related allergens are abbreviated Fel by the World Health Organization.  

  • Feiss line

    A line that extends from the first metatarsophalangeal joint, over the navicular tubercle, to the apex of the medial malleolus. Changes in the angle formed by this line before and during weightbearing can be used to determine excessive pro nation of the foot. If the angle formed by Feiss’ line is in the range of…

  • Fee splitting

    The unethical practice of returning to the referring health care provider a portion of the fee received from a patient who is seen in consultation.  

  • Feedforward

    Anticipatory motor impulses sent before movement to prepare the musculoskeletal system for postural adjustments. The feedforward mechanism is thought to help prepare muscles to perform required tasks.  

  • Feeder layer

    A population of connective tissue cells that are used to nourish cultured tissue cells in the laboratory. The feeder cell layer is often derived from mouse fibroblasts. Feeder cells supply metabolites to the cells they support, do not grow or divide, and can be inactivated by gamma irradiation.  

  • Federal torts claims act

    Statute enacted by Congress in 1946 that specifies how and when private parties may sue the United States in federal court for torts committed by those acting on behalf of the United States. It controls the legal liability of health care professionals employed at government clinics (e.g., in the Indian Health Service, military clinics, and…