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It is blended anteriorly with the plantar (glenoid) ligaments of the metatarsophalangeal articulations. Its plantar surface is concave where the Flexor tendons run below it. Above it, the tendons of the Interossei pass to their insertions. Its homologue in the hand is the transverse metacarpal ligament, which connects the metacarpals to each other.
Since the intersseous muscles cross on the metatarsophalangeal joint, then they act on that specific joint and cause adduction of toes III, IV, and V. [1] Adduction itself is not of extreme importance to the toes, but these muscles work together with the dorsal interosseous muscles in flexion of the foot.
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.
Plantar: Lateral plantar artery and plantar arch, plantar metatarsal and plantar digital arteries. Nerve: Lateral plantar nerve: Actions: Dorsal: Abducts 2nd through 4th toes, flex metatarsophalangeal joints, and extend phalanges. Plantar: Adduct digits (2-4) and flex metatarsophalangeal joint and extend phalanges. Anatomical terms of muscle
The second dorsal interossei from the medial side of the bone and the third dorsal interossei from the lateral side. The function of the muscle is to spread the toes. [2] The first Plantar interossei muscle originates from the medial side of the base and shaft of the third metatarsal. The function of the muscle is to move the third toe medially ...
Medically, the soles are the site of the plantar reflex, the testing of which can be painful due to the sole's sensitivity. The deep fibular nerve from the common fibular nerve provides the sensory innervation of the skin between the first and second toes and the motor innervation of the muscles of the anterior compartment of the leg and dorsal ...
The dorsal ligaments pass transversely between the dorsal surfaces of the bases of the adjacent metatarsal bones. The plantar ligaments have a similar arrangement to the dorsal. The interosseous ligaments consist of strong transverse fibers which connect the rough non-articular portions of the adjacent surfaces.
When the toes are dorsiflexed in the propulsive phase of gait, the plantar fascia becomes tense, resulting in elevation of the longitudinal arch and shortening of the foot (see 3A). One can liken this mechanism to a cable being wound around the drum of a windlass (see 3B); the plantar fascia being the cable, the metatarsal head the drum, and ...
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