Due to bony overlap in the lateral radiographic projection, our understanding of the metacarpal anatomy in this plane is significantly limited. There is a paucity of data detailing the normal radiographic anatomy, with only one report using plain radiographs to measure morphometric parameters. As such, a good understanding of the normal anatomy is important in repairing or reconstructing metacarpal fractures. Although some degree of deformity can be tolerated with little functional consequence, the goal of surgical treatment of metacarpal fractures is restoration of normal anatomy. Accurate measurement of deformity is important in assessing the extent of injury and determining an appropriate course of treatment. Recent studies underscore the difficulty in reliably measuring the magnitude of displacement and angulation. There is no consensus regarding a standard method of radiographic measurement of these fractures. Indications for surgical treatment are based on the degree of fracture angulation and rotational alignment. In addition, these fracture types account for 18 % of all hand injuries. These injuries are common, with an incidence of 13.6 per 100,000 person-years for acute hospital care in the USA. ISBN 978-8-7.Metacarpal neck fractures of the small and ring fingers typically occur as a result of a direct trauma. Bevægeapparatets anatomi (in Danish) (12th ed.). ^ Bojsen-Møller, Finn Simonsen, Erik B.^ a b c Bojsen-Møller, Finn Simonsen, Erik B."Sesamoids and accessory ossicles of the foot: anatomical variability and related pathology".
"Traction apophysitis of the fifth metatarsal base in a child: Iselin's disease". Archived from the original on 16 October 2017. Emergency Care Institute, New South Wales. : CS1 maint: multiple names: authors list ( link) "Diagnosis and Management of Common Foot Fractures". Journal of the American Academy of Orthopaedic Surgeons. "Treatment Strategies for Acute Fractures and Nonunions of the Proximal Fifth Metatarsal". ^ a b Bojsen-Møller, Finn Simonsen, Erik B.The horizontal head of the adductor hallucis from the deep transverse metatarsal ligament, a narrow band which runs across and connects together the heads of all the metatarsal bones. The function of the muscle is to move the fourth toe medially and move the toes together. The third Plantar interosseus muscle originates from the medial side of the base and shaft of the fifth metatarsal. The function of the muscle is to spread the toes. The fourth dorsal interosseus muscle originates from the medial side of shaft. The plantar surface of the base is grooved for the tendon of the abductor digiti quinti, and gives origin to the flexor digiti minimi brevis. The tendon of the fibularis tertius inserts on the medial part of the dorsal surface and the fibularis brevis on the dorsal surface of the tuberosity. The head articulates with the fifth proximal phalanx, the first bone in the fifth toe.Ī strong band of the plantar aponeurosis connects the projecting part of the tuberosity with the lateral process of the tuberosity of the calcaneus. The plantar surface of the base is grooved for the tendon of the abductor digiti quinti. The fifth metatarsal has a rough eminence on the lateral side of its base, known as the tuberosity or the styloid process. The base articulates behind, by a triangular surface cut obliquely in a transverse direction, with the cuboid and medially, with the fourth metatarsal. The bone is curved longitudinally, so as to be concave below, slightly convex above. These surfaces are rough for the attachment of ligaments. The bone is somewhat flat giving it two surfaces the plantar (towards the sole of the foot) and the dorsal side (the area facing upwards while standing). The narrowed part in the middle is referred to as the body (or shaft) of the bone. The base is the part closest to the ankle and the head is closest to the toes. Īs with the four other metatarsal bones it can be divided into three parts a base, body and head. The fifth metatarsal is analogous to the fifth metacarpal bone in the hand. It is the second smallest of the five metatarsal bones. The fifth metatarsal bone is a long bone in the foot, and is palpable along the distal outer edges of the feet.
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