iliotibial tract(redirected from tractus iliotibialis)
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a longitudinal assemblage of tissues or organs, especially a number of anatomic structures arranged in series and serving a common function, such as the gastrointestinal or urinary tract; also used in reference to a bundle (or fasciculus) of nerve fibers having a common origin, function, and termination within the central nervous system.
alimentary tract alimentary canal.
biliary tract the organs, ducts, and other structures that participate in secretion (the liver), storage (the gallbladder), and delivery (hepatic and bile ducts) of bile into the duodenum. See illustration.
corticospinal t's two groups of nerve fibers (the anterior and lateral corticospinal tracts) that originate in the cerebral cortex and run through the spinal cord.
digestive tract alimentary canal.
dorsolateral tract a group of nerve fibers in the lateral funiculus of the spinal cord dorsal to the posterior column.
extrapyramidal tract extrapyramidal system.
gastrointestinal tract the stomach and intestine in continuity; see also digestive system.
iliotibial tract a thickened longitudinal band of fascia lata extending from the tensor muscle downward to the lateral condyle of the tibia.
intestinal tract see intestinal tract.
optic tract the nerve tract proceeding backward from the optic chiasm, around the cerebral peduncle, and dividing into a lateral and medial root, which end in the superior colliculus and lateral geniculate body, respectively.
pyramidal t's collections of motor nerve fibers arising in the brain and passing down through the spinal cord to motor cells in the anterior horns.
respiratory tract respiratory system.
urinary tract the organs and passageways concerned in the production and excretion of urine from the kidneys to the urinary meatus; see also urinary system.
uveal tract the vascular tunic of the eye, comprising the choroid, ciliary body, and iris.
a fibrous reinforcement of the fascia lata on the lateral surface of the thigh, extending from the crest of the ilium, especially the tuberculum of the crest, to the anterolateral aspect of the lateral condyle of the tibia (Gerdy tubercle).
Etymology: L, ilium, flank, tibia, shinbone
a band of connective tissue that extends from the iliac crest to the knee and links the gluteus maximus to the tibia.
il·i·o·tib·i·al tract(il'ē-ō-tib'ē-ăl trakt) [TA]
A fibrous reinforcement of the fascia lata on the lateral surface of the thigh, extending from the crest of the ilium to the lateral condyle of the tibia.
iliotibial tractA thickening in the sheet of tough fibrous tissue (fascia lata) that covers the outer side of the thigh. The iliotibial tract extends upwards from the prominence on the upper part of the main lower leg bone (tibia) (the lateral condyle) to the crest of the pelvis (the iliac crest).
Maissiat,Jacques H., French anatomist, 1805-1878.
Maissiat band - a fibrous reinforcement of the fascia lata on the lateral surface of the thigh. Synonym(s): iliotibial tract
iliotibial band; ITB; iliotibial tract lateral thickening of fascia lata; extends from iliac crest; insets into lateral condyle of proximal tibia, knee joint capsule and patella; forms insertion of gluteus maximus and tensor fascia lata; steadies pelvis on thigh and acts as anterolateral stabilizer of tibia (see Table 1for ITB-stretching exercises)
|Muscle group||Action (hold for 5-10 seconds; repeat ×5, three times a day)|
|Hip abductor||Stand erect, legs straight, feet together; stretch trunk (on frontal plane) towards the unaffected leg|
|Iliotibial band||Lie on a bench on the unaffected side, with the unaffected hip and knee slightly flexed, in order to maintain balance; flex the affected hip and straighten the affected knee so that the affected leg hangs off the bench; allow the iliotibial band of the affected leg to be stretched by gravitational pull|
Lie on a bench on the affected side with the affected leg in line with the body and the hip and knee locked; flex the unaffected (upper) leg; place the hands on the bench immediately under the shoulder and push the trunk upwards as far as possible to apply stretch to the lateral area of the affected leg
|Upper iliotibial band||Stand erect; with affected leg behind normal leg; stretch trunk (on frontal plane) towards unaffected side|
|Lower iliotibial band||Stand erect as above, with the knee of the affected leg slightly flexed and hips rotated (on transverse plane) towards affected leg; stretch trunk (on frontal plane) towards the unaffected side|
|Iliotibial band and hamstrings||Stand erect, with the affected leg behind the normal leg so that the knee of the affected leg rests on the posterior aspect of the non-affected knee; rotate the trunk (on transverse plane) away from the affected leg and attempt to touch the heel of the affected leg|