Fracture, transverse
Fracture, transverse: A fracture in which the break is across a bone, at a right angle to the long axis of the bone.
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- Fractured hip
Fractured hip: Broken bone in the hip, a key health problem among the elderly, usually due to a fall or other kind of trauma involving direct impact to the hip bone which has been weakened by osteoporosis. The part of the hip most often broken is the greater trochanter of the femur. In older people […]
- Fragile site
Fragile site: A point on a chromosome where gaps and breaks tend to occur, which can be passed on from one generation to another.
- Fragile X chromosome
Fragile X chromosome: An X chromosome with a heritable fragile site associated with a frequent form of mental retardation — the fragile X syndrome. The fragile X chromosome was first sighted by Dr. Herbert A. Lubs in 1969 who termed it the “marker X.”. The fragile X is also called FRAXA. It was the first […]
- Fragile X syndrome
The most common heritable form of mental retardation. Fragile X syndrome is due to a dynamic mutation (a trinucleotide repeat) at an inherited fragile site on the X chromosome; therefore, it is an X-linked disorder. Characteristics of fragile X syndrome in boys may include, in addition to mental impairment, prominent or long ears, a long […]
- Fragile X tremor/ataxia syndrome
Fragile X tremor/ataxia syndrome: Abbreviated FXTAS (pronounced fax-tass). A progressive neurological disorder that strikes men over age 50 and causes tremor, ataxia (balance problems) and dementia that become increasingly severe with age. These men may be misdiagnosed with Parkinson’s or Alzheimer’s disease. The disorder is due to a small mutation (premutation) in the same gene […]