peroneus longus


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Related to peroneus longus: Peroneus tertius, Peroneus brevis

peroneus longus

the more superficial of the two lateral muscles of the leg. The muscle pronates and plantar flexes the foot. Compare peroneus brevis.

peroneus longus

Long fibular muscle (see there); musculus peroneus longus [NA6].

peroneus longus

The muscle arising from the lateral tibial condyle and the upper two thirds of the fibula and inserting on the lateral aspect of the first metatarsal and the associated portion of the first cuneiform. The peroneus longus is the primary contributor to the plantar flexion of the foot and the eversion of the ankle.
See also: peroneus

peroneus longus

; PL extrinsic foot muscle, within lateral compartment of lower leg
  • origin upper two-thirds of lateral surface of fibula, PL belly overlying belly of peroneus brevis

  • insertion tendon courses along lateral side of fibula, superficial to peroneus brevis (PB), lying in a common sheath with tendon of PB (see peroneus brevis); within the foot, PL tendon turns (in groove on interior aspect of cuboid) to run obliquely across deep area of sole of foot (i.e. sixth layer) and inserts into plantar aspect of medial cuneiform and first metatarsal base

  • nerve supply superficial peroneal nerve

  • action foot eversion at subtalar joint; ankle joint plantarflexion; increase in curvature of midfoot transverse arch

References in periodicals archive ?
Subcutaneous Peroneus Longus Tendon Rupture Associated with Os Peroneum Fracture.
Comparison of un-taped and taped ankle conditions for peak normalised activity mean ([+ or -] standard deviation) [95% confidence intervals]) in the tibialis anterior (TA), peroneus longus (PL), peroneus brevis (PB), and soleus (SOL) for the left leg when it was either the inside or outside leg of a planned cut in the Y-shaped agility test in experienced basketball players (n = 20).
Peroneus Longus which is harvested as a component of chimeric free fibula octeocutaneous flap is a type II muscle.
Two years after herpes zoster diagnosis, a follow-up evaluation showed that the muscular strength of the tibialis anterior improved to 5/5 (left/right) and the muscular strength of the peroneus longus and the extensor hallucis longuis muscles improved to 4/5 (left/right).
The accessory ossicle was identified within the peroneus longus tendon in the lateral aspect of the midfoot.
The peroneus longus tendon is detached as well and is added to the transfer to balance it and prevent valgus deformity, relegating ankle dorsiflexion to the remaining long toe extensors.
Identified the peroneus longus and peroneus brevis muscle at the junction of middle one third and lower one third, long tendon peroneus longus and muscular portion of peroneus brevis.
In the three dimensional reconstruction computed tomographic (3D-CT) scan by combining multiplanar reconstructions (MPR) and volumerendering technique (VRT), the distal fragment of the fractured os peroneum remained at the cuboid notch and the proximal fragment displaced proximally by traction of the peroneus longus tendon (Figure 2).
Individually, both peroneals resulted in a greater number of feasible postures, with the peroneus longus slightly better than the peroneus brevis.
26,27) Evertors that help plantar flex the ankle are peroneus brevis and peroneus longus.
The tendon splits or acquires a "C"-shaped morphology at the level of the lateral malleolus, with the peroneus longus tendon (PLT) insinuating in the concavity of the "C" or between the 2 split components.
Fox limped off the Staples Center court last Sunday and an MRI showed he had completely torn the peroneus longus tendon.