metacarpus

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Related to metacarpal bone: base of metacarpal

metacarpus

1. the skeleton of the hand between the wrist and the fingers, consisting of five long bones
2. the corresponding bones in other vertebrates

Metacarpus

 

the part of the superior (anterior) pentadactyl extremity of vertebrates that is located between the carpus and the distal phalanges of the fingers. In man, the metacarpus is made up of five metacarpal bones, which are attached to the muscles of the palm. The hypothenal muscles of the thumb and the little finger are the largest muscles of the palm. The tendons of the antebrachial muscles, which set the fingers in motion, pass along the metacarpal bones; blood vessels and motor and sensory nerves are also located here. On the palm side, the metacarpal skin is thick and hairless and the fold markings are individuated. On the dorsal side, the skin is thinner and often covered with short hairs. Tendovaginitis develops with inflammatory diseases of the sheaths of the tendons. Fractures of the metacarpal bones require apposition and immobilization for a period up to 1—1½ months.

metacarpus

[¦med·ə′kär·pəs]
(anatomy)
The portion of a hand or forefoot between the carpus and the phalanges.
References in periodicals archive ?
(B) A modified universal plastic goniometer was used to measure the extended carpus of a right wing (ventral approach) by positioning the body of the plastic goniometer over the joint and aligning the arms of the goniometer so they were overlying and parallel with the distal diaphysis of the ulna and the mid-diaphysis of the major metacarpal bone. The arms of the goniometer and aligned bone were gripped together by the fingers for flexion and extension of the joint to confirm appropriate positioning.
It is considered that the compatibility of the grafted metatarsal bone size and the metacarpal bone was advantageous.
The achieved elongation of the 20 metacarpal bones varied from 25 mm to 40 mm (average 29.2 mm), and of the 181 digital phalanges from 12 mm to 32 mm (average 18.7 mm).
Grossly the first metacarpal bone showed a growth measuring 6x5x4 cm.
Under physiological conditions, metacarpal bones underlie bending forces.
The results of measurements of BMD using DXA and parameters of second metacarpal bone using studied hand radiograms system are presented in Table 3.
X-ray of the hand showed an osteolytic expansile lesion at the base of the 1st metacarpal bone, (Fig.
Alternatively they can be controlled by a pressure sensitive touch pad, which relies on the remnant digit or tissue surrounding the metacarpal bone to provide the necessary pressure to activate the finger.
Volume, surface area and length values of each phalangeal bone and each metacarpal bone were recorded in ratio comparison with each finger or total metacarpal bones, respectively.
The metacarpal bone which was wholly preserved could belong probably to a specimen with shoulder height of 128-136 cm.
Even more impressive is the fact that both groups showed about a 3% loss in metacarpal bone mineral density, and patients physically fell at similar rates (two per year in each group).