tibialis posterior muscle


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

tib·i·al·is pos·ter·i·or mu·scle

(tib-ē-ā'lis pos-tēr'ē-ŏr mŭs'ĕl)
Most anterior (deepest) muscle of deep posterior (plantar flexor) compartment of leg; origin, soleal line and posterior surface of tibia, the head and shaft of the fibula between the medial crest and interosseous border, and the posterior surface of interosseous membrane; insertion, navicular, three cuneiform, cuboid, and second, third, and fourth metatarsal bones; action, plantar flexion and inversion of foot; nerve supply, tibial.
Synonym(s): musculus tibialis posterior [TA] .

tibialis posterior muscle

Leg muscle. Origin: anterior tibia and fibula. Insertion: navicular, cuneiform, and cuboid bones; metatarsals 2-4. Nerve: tibial (L4-L5). Action: inverts and plantarflexes foot.
See also: muscle
References in periodicals archive ?
Caption: FIGURE 4: T2 weighted, fat saturated, postcontrast, axial MR image of left calf at another location, again showing a multiloculated fluid collection with associated enhancing rim and septations (white arrows) within the tibialis posterior muscle, compatible with an intramuscular abscess.
Caption: Figure 5: T2 weighted, fat saturated, postcontrast, coronal MR image of left calf showing a multiloculated fluid collection with associated enhancing rim and septations (white arrows) within the tibialis posterior muscle, compatible with an intramuscular abscess.
(5,6,9,10) Patients typically have a flatfooted heel-toe progression and a poor or absent heel rise, in fact those with a dysfunctional tibialis posterior muscle asked to rise onto their toes from a position of single-leg stance are either completely unable to comply or can do so only to a limited degree.
Weakness or pain during contraction of an injured tibialis posterior muscle is characteristic.
(30,32-34) It is postulated that the surgical failures in patients with deep posterior compartment syndrome may be due to inadequate release of the tibialis posterior muscle or suboptimal postoperative mobilization that leads to hematoma and scar formation in the deep posterior compartment.