장비골근, 단비골근

[문형철]

- 거골하관절을 외반시키는 근육

1. 종비인대파열시 대신할 수 있는 안정성을 만드는 근육

2. 장비골근-first metatarsal base-전경골근

3. deep peroneal nerve entrapment부위는 장비골근, 장지신근 등 - 엄지 numbness

4. 장비골근은 횡아치를 만드는 중요한 근육

5. 장단비골근은 발의 족저굴곡, 외반근육

6.

panic bird..

1. 장비골근(peroneus longus, fibularis longus)

In human anatomy, the fibularis longus (also known as peroneus longus) is a superficial muscle in the lateral compartment of the leg, and acts to evert and plantar flex the ankle. The muscle, the longest and most superficial of the three fibularis muscles, is attached proximally to the head of the fibula and its 'belly' runs down most of this bone. It becomes a tendon that goes posteriorly around the lateral malleolus of the ankle, then continues under the foot to attach to the medial cuneiform and first metatarsal.

Origin and insertion[edit]

It arises from the head and upper two-thirds of the lateral surface of the body of the fibula, from the deep surface of the fascia, and from the intermuscular septa between it and the muscles on the front and back of the leg; occasionally also by a few fibers from the lateral condyle of the tibia. Between its attachments to the head and to the body of the fibula there is a gap through which the common fibular nerve passes to the front of the leg.^[2]

It ends in a long tendon, which runs behind the lateral malleolus, in a groove common to it and the tendon of the fibularis brevis; the groove is converted into a canal by the superior fibular retinaculum, and the tendons in it are contained in a common mucous sheath.^[2] The tendon then extends obliquely forward across the lateral side of the calcaneus, below the trochlear process, and the tendon of the fibularis brevis, and under cover of theinferior fibular retinaculum.^[2] It crosses the lateral side of the cuboid, and then runs on the under surface of that bone in a groove which is converted into a canal by the long plantar ligament; the tendon then crosses the sole of the foot obliquely, and is inserted into the lateral side of the base of the first metatarsal bone and the lateral side of the medial cuneiform.^[2] Occasionally it sends a slip to the base of the second metatarsal bone.^[2]

The tendon changes its direction at two points: first, behind the lateral malleolus; secondly, on the cuboid bone; in both of these situations the tendon is thickened, and, in the latter, a sesamoid fibrocartilage (sometimes a bone), is usually developed in its substance.^[2]

Actions[edit]

The fibularis longus and brevis muscles plantar-flex the foot, in conjunction with the tibialis posterior, antagonizing the tibialis anterior and fibularis tertius, which are dorsi-flexors of the foot.^[2]

The fibularis longus also everts the sole of the foot, and from the oblique direction of the tendon across the sole of the foot is an important agent in the maintenance of the transverse arch.^[2]

Taking their fixed points below, the fibularis muscles serve to steady the leg upon the foot.^[2]

This is especially the case in standing upon one leg, when the tendency of the superincumbent weight is to throw the leg medialward; the fibularis longus overcomes this tendency by drawing on the lateral side of the leg.^[2]

2. 단비골근(peroneus brevis, fibularis brevis)

Structure[edit]

It arises from the lower two-thirds of the lateral surface of the body of the fibula; medial to the fibularis longus; and from the intermuscular septa separating it from the adjacent muscles on the front and back of the leg.

The fibers pass vertically downward, and end in a tendon which runs behind the lateral malleolus along with but in front of that of the preceding muscle, the two tendons being enclosed in the same compartment, and lubricated by a common mucous sheath.

It then runs forward on the lateral side of the calcaneus, above the trochlear process and the tendon of the Peronæus longus, and is inserted into the tuberosity at the base of the fifth metatarsal bone, on its lateral side.

Innervation[edit]

It is also innervated by the superficial fibular (peroneal) nerve.

Function[edit]

The muscle assists in weak plantarflexion and eversion of the foot.

장단비골근 Trp 탐구

참고) deep peroneal nerve

The deep fibular nerve (deep peroneal nerve) begins at the bifurcation of the common fibular nerve, between the fibula and upper part of the fibularis (peroneus) longus, passes infero-medially, deep to extensor digitorum longus, to the anterior surface of the interosseous membrane, and comes into relation with the anterior tibial artery above the middle of the leg; it then descends with the artery to the front of the ankle-joint, where it divides into a lateral and a medial terminal branch.

It lies at first on the lateral side of the anterior tibial artery, then in front of it, and again on its lateral side at the ankle-joint.

In the leg, the deep fibular nerve supplies muscular branches to the tibialis anterior, extensor digitorum longus, fibularis (peroneus) tertius, and extensor hallucis longus (propius), and an articular branch to the ankle-joint. After its bifurcation past the ankle joint, the lateral branch of the deep fibular nerve innervates the extensor digitorum brevis and the extensor hallucis brevis, while the medial branch goes on to provide cutaneous innervation to the webbing between the first and second digits.

Damage to the deep fibular nerve, as is possible with traumatic injury to the lateral knee, results in foot drop. The deep fibular nerve is also subject to injury resulting from lower motor neuron disease, diabetes, ischemia, and infectious or inflammatory conditions. Injury to the common peroneal nerve is the most common isolated mononeuropathy of the lower extremity and produces sensory problems on the lateral lower leg in addition to foot drop.[1]

에반스의 장단비골근 isolated stretching