Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «H»:
Hip bursitis: A bursa is a fluid-filled sac that
functions as a gliding surface to reduce friction between moving tissues of the body.
There are two major bursae of the hip. Bursitis is usually not infectious, but the bursa
can become infected. Treatment of non-infectious bursitis includes rest, ice...
Hip dislocation, congenital
Hip dislocation, congenital: The abnormal formation of the hip joint in which the ball at the top of the thighbone (the femoral head) is not stable within the socket (the acetabulum). The ligaments of the hip joint may also be loose and stretched.
The degree of instability or looseness varies. A b...
Hip fracture: 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 (the knobby end) of the
Hip pain: Hip pain is the
sensation of discomfort in or around the hip joint, where the upper end (head) of the thigh bone (femur) fits
into the socket of the hip bone. Hip pain has a number of causes, most of which are related to degeneration, injury, or inflammation of the muscles, bones, joints...
Hip pointer: Sportstalk for an iliac crest contusion (a bruise of
the upper edge of the ilium, one of the hip bones). ...
Hip replacement, total
Hip replacement, total: Surgery in which the diseased ball and socket of the hip joint are completely removed and replaced with artificial materials. A metal ball with a stem (a prosthesis) is inserted into the femur (thigh bone) and an artificial plastic cup socket is placed in the acetabulum (a "c...
Hip, developmental dislocation of the (DDH)
Hip, developmental dislocation of the (DDH): The abnormal formation of the hip joint in which the ball at the top of the thighbone (the femoral head) is not stable within the socket (the acetabulum). The ligaments of the hip joint may also be loose and stretched.
The degree of instability or loose...
HIPAA: Acronym that stands for the Health Insurance Portability and Accountability Act, a US law designed to provide privacy standards to protect patients' medical records and other health information provided to health plans, doctors, hospitals and other health care providers. Developed by the Depa...
Hippocampus: An area buried deep in the forebrain that helps
regulate emotion and memory. Functionally, the hippocampus is part of the olfactory cortex, that part of the cerebral cortex essential to the sense of smell. Certain antidepressants (such as fluoxetine, or Prozac) influence the birth of ne...
Hippocrates: (c.460-377BC) Great Greek physician on the Mediterranean island of Cos, who founded a medical school there, and is regarded as the "Father of Medicine." That is the standard view of Hippocrates. But, in truth, virtually nothing is known of the first physician named Hippocrates. There a...
Hippocratic Oath: One of the oldest binding documents in history, the Oath written by Hippocrates is still held sacred by physicians: to treat the ill to the best of one's ability, to preserve a patient's privacy, to teach the secrets of medicine to the next generation, and so on.
There are many v...
Hippophobia: An abnormal and
persistent fear of horses. Sufferers of this fear experience undue anxiety even when a horse is known to be gentle and well trained. They usually avoid horses entirely rather than risk being kicked, bitten or thrown. They may also fear other hoofed animals such as ponie...
Hirschsprung disease: A congenital abnormality (birth defect) of the bowel in which there is absence of the ganglia (nerves) in the wall of the bowel. Nerves are missing starting at the anus and extending a variable distance up the bowel. This results in megacolon (massive enlargement of the bowel) ...
Hirsutism: Having an overabundance of hair. A person with hirsutism is said to be hirsute (pronounced hir-suit).
Hirsutism is the Roman way of saying hairy. It comes from the Latin "hirsutus" meaning bristly or rude. ...
Hirudin: An anticoagulant ("bloodthinner"). Hirudin is the active principle in the salivary secretion of leeches. The name hirudin is from Hirudo medicinalis, the name of the medicinal leech.
In 1884 John Haycraft in Strasbourg found that leeches contained a substance with anticoagulant properties. ...