Search results
Results from the WOW.Com Content Network
The three plantar interosseous muscles are unipennate, as opposed to the bipennate structure of dorsal interosseous muscles, and originate on a single metatarsal bone.The three muscles originate on the medial aspect of metatarsals III-V.
Plantar: Bases and medial sides of 3rd through 5th metatarsals. Insertion: Dorsal: 1st = medial side of proximal phalanx of 2nd digit; 2nd through 4th = lateral sides of digits 2-4. Plantar: Medial sides of bases of proximal phalanges of 3rd through 5th digits. Artery: Dorsal: Arcuate artery, dorsal and plantar metatarsal arteries.
This arrangement of dorsal interossei makes the second toe the midline of the foot, whereas the midline of the hand (marked by dorsal interossei of hand) is in the third finger. [2] Abduction is of little importance in the foot, but, together with the plantar interossei, the dorsal interossei also produce flexion at the metatarsophalangeal joints.
The flexor digiti minimi brevis (flexor brevis minimi digiti, flexor digiti quinti brevis) lies under the metatarsal bone on the little toe, and resembles one of the interossei. It arises from the base of the fifth metatarsal bone , and from the sheath of the fibularis longus ; its tendon is inserted into the lateral side of the base of the ...
Insertion: Dorsal side of the basis Fibularis brevis: Insertion: Tuberosity Flexor digiti minimi brevis: Origin: Plantar surface of the base Dorsal interossei IV: Origin: Medial side of the shaft Plantar interossei III: Origin: Medial side of the base and shaft Horizontal head of adductor hallucis: Origin: Deep transverse metatarsal ligament
The flexor digitorum brevis or flexor digitorum communis brevis [1] is a muscle which lies in the middle of the sole of the foot, immediately above the central part of the plantar aponeurosis, with which it is firmly united. Its deep surface is separated from the lateral plantar vessels and nerves by a thin layer of fascia.
Origin Insertion Innervation Main Action Tibialis anterior: Lateral condyle and superior half of lateral surface of tibia and interosseous membrane: Medial and inferior surfaces of medial cuneiform and base of 1st metatarsal: Deep fibular (peroneal) nerve (L4, L5) Dorsiflexes ankle and inverts foot Extensor hallucis longus
Origin Insertion Innervation Main Action Fibularis longus: Head and superior two thirds of lateral surface of fibula: Base of 1st metatarsal and medial cuneiform: Superficial fibular nerve (L5, S1, S2) Everts foot and weakly plantarflexes ankle Fibularis brevis: Inferior two thirds of lateral surface of fibula