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Related to anterior compartment: anterior compartment of arm, Anterior compartment of thigh, anterior compartment syndrome
anterior compartmentlower-leg fascial compartment, enclosing the anterior muscle group and (Table 1)
|Anterior drawer test||>4 mm anterior displacement of calcaneum = ATFL tear|
|Talar tilt test||Greater than normal inversion of STJ = ATFL rupture|
Additional dimpling below lateral malleolus = CFL rupture
|Ankle arthrography||Shows leakage of contrast medium from lateral ankle joint area|
Dye leakage inferior to medial malleolus = ruptured deltoid ligament
|Peroneal tenography||Leak of contrast medium from the peroneal tendon sheath = CFL tear (CFL is closely apposed to peroneal tendon sheath)|
|Magnetic resonance imaging||Pinpoints exact location of ligament/capsule/tendon injury|
|Computerised tomography scan||Diagnoses associated with osseous microfracture, joint mice, loose bodies, avulsion fractures|
|Arthroscopy||Visualizes bone fragments, synovial hypertrophy, chronic synovitis, osteochrondral defects, bone impingement|
ATFL, anterior talofibular ligament; STJ, subtalar joint; CFL, calcaneofibular ligament.
situated at or directed toward the front; opposite of posterior. In quadrupeds the use of the term is limited to parts of the head but is often used to mean cranially. In bipeds such as humans it is synonymous with ventral.
anterior abdomen pain
elicited pain in the anterior abdomen caused, in cattle, by reticulitis, hepatic or splenic abscess, abomasal ulcer and intestinal obstruction.
the part of the eyeball between the cornea and the iris, filled with aqueous humor.
anterior chamber angle
see iridocorneal angle.
chamber of the eye bounded by the iris and cornea; contains the aqueous humor as it moves to the filtration angle; called also anterior chamber.
anterior cruciate ligament
see cranial (anterior) cruciate ligament.
anterior (cranial) drawer sign
cranial, nonrotary movement of the proximal tibia in relation to the distal femur. Normally restricted by the cranial (anterior) cruciate ligament and used as a diagnostic test for rupture of that structure.
anterior epithelial layer
of the cornea is a noncornified, stratified, squamous epithelium, continuous with the bulbar conjunctival epithelium.
anterior functional stenosis
achalasia of the reticulo-omasal sphincter causing ingesta to accumulate in the reticulorumen.
anterior limiting membrane
of the cornea is a combination of the basement membrane, a felted layer of fine collagen fibers; substantial only in primates.
anterior pituitary hormones
anterior station trypanosomes
a section of the genus Trypanosoma in which the infectious stages accumulate in the mouthparts and salivary glands of the intermediate host so that the parasite is transmitted when the insect vector takes a blood meal. Called also Salivaria. See also posterior station trypanosomes.
anterior vena cava
see vena cava.