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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. Plantar: Lateral plantar artery and plantar arch, plantar metatarsal and plantar ...
Near their points of division each sends upward an anterior perforating branch to join the corresponding dorsal metatarsal artery. The first plantar metatarsal artery (arteria princeps hallucis) springs from the junction between the lateral plantar and deep plantar arteries and sends a digital branch to the medial side of the first toe. The ...
The metatarsophalangeal joints (MTP joints) are the joints between the metatarsal bones of the foot and the proximal bones (proximal phalanges) of the toes.They are analogous to the knuckles of the hand, and are consequently known as toe knuckles in common speech.
The two heads of each muscle form a central tendon which passes forwards deep to the deep transverse metatarsal ligament. [1] The tendons are inserted on the bases of the second, third, and fourth proximal phalanges [2] and into the aponeurosis of the tendons of the extensor digitorum longus [3] without attaching to the extensor hoods of the toes.
At the base of the first metatarsal bone, where it is much diminished in size, it passes along the medial border of the first toe, anastomosing with the first dorsal metatarsal artery. Small superficial digital branches accompany the digital branches of the medial plantar nerve and join the plantar metatarsal arteries of the first three spaces.
At the proximal parts of the interosseous spaces these vessels receive the posterior perforating branches from the plantar arch, and at the distal parts of the spaces they are joined by the anterior perforating branches, from the plantar metatarsal arteries. The fourth dorsal metatarsal artery gives off a branch which supplies the lateral side ...
Morton's neuroma commonly results in pain and numbness between the third and fourth toes of the sufferer, due to it affecting the nerve between the third and fourth metatarsal bones. [6] The big toe is also the most common locus of ingrown nails, and its proximal phalanx joint is the most common locus for gout attacks.
The lateral plantar artery (external plantar artery), much larger than the medial, passes obliquely lateralward and forward to the base of the fifth metatarsal bone.. It then turns medialward to the interval between the bases of the first and second metatarsal bones, where it unites with the deep plantar branch of the dorsalis pedis artery, thus completing the plantar arch.