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 ?
61% Table II--Statistical analysis (mean [+ or -] standard deviation) of tests with open and closed eyes, with (Y) and without (N) tape, related to postural control (COP = Centre of Pressure) and myoelectrical activity of Tibialis Anterior muscle (RMS TA) and of Peroneus Longus muscle (RMS PL).
The descriptive statistics for the peroneus longus and tibialis anterior reaction times for the non-dominant and dominant limbs in neutral and plantar-flexed ankle positions are presented in Table 1.
The os peroneum is an accessory ossicle located within the substance of the peroneus longus tendon and its location, size, and appearance are varied (Coughlin, 1999).
Gabison and Gentile (22) describe a case of acute foot drop after ankle sprain, in which the peroneus longus muscle was ruptured.
Characterization of patients with primary peroneus longus tendinopathy: A review of twenty-two cases.
Hastanin yakinmalarinin baslangicindan 2 ay sonra yapilan ilk igne EMG bulgulari Spontan aktivite Kas PKD Fibrilasyon L Tibialis Anterior + + L Peroneus Longus + + + + + L Gastroknemius - - L Biseps femoris (kisa basi) + + + L Semimembranosus - - Motor Unite Potansiyeli Tam kasi Kas Sure Amplitud Polifazi L Tibialis Anterior Normal Normal + + Hafif seyrelme L Peroneus Longus Normal + Normal Ileri seyrelme L Gastroknemius + Normal + Submaksimal L Biseps femoris (kisa basi) Normal + + Seyrelme L Semimembranosus Normal Normal Normal Submaksimal Tablo 2.
both gastrocnemii and peroneus longus coactivated, tibialis anterior and peroneus tertius coactivated, and semimembranosus and all three vasti coactivated).
In the electromyography (EMG), abnormal spontaneous activity and a reduced recruitment pattern of right tibialis anterior, peroneus longus, and biceps femoris muscles were detected.
The lateral compartment contains the peroneus longus and peroneus brevis muscles and the superficial branch of the common peroneal nerve.
Needle electromyography (EMG) showed marked denervation potentials and a reduced recruitment pattern especially in the right tibialis anterior, peroneus longus and biceps femoris muscles.
The peroneal tendons, peroneus longus and brevis, run in a sheath posterior to the lateral malleolus coursing beneath the superior and inferior retinacula.