Definition of metacarpal in English:



  • 1Any of the five bones of the hand.

    • ‘Once even, she cracked a metacarpal, and she beat me for this, too.’
    • ‘The tendons are inserted either into the corresponding extensor tendons or onto the metacarpals.’
    • ‘Both hands were amputated just distal to the carpus, leaving three metacarpal stumps on the right hand and a vestige of one metacarpal on the left hand.’
    • ‘An undisplaced fractured head of second metacarpal was treated conservatively.’
    • ‘Each of the phalanges and metacarpals have common fracture patterns and are related to each bone's location and susceptibility to failure under external loads.’
    • ‘Radiographs showed no fracture of the wrist, metacarpals or other bones.’
    • ‘The hands are osteopenic with short wide metacarpals and phalanges.’
    • ‘The muscle inserts by a long thin tendon onto the base of the fifth metacarpal on its medial side.’
    • ‘In another study of 127 dissected forearms, 10.2% of the abductor pollicis longus muscles had a single tendon that inserted upon the radial side of the first metacarpal only.’
    • ‘There are eight carpal bones in the wrist, five metacarpals, and 14 nonsesamoid bones that comprise the phalanges.’
    • ‘Mutilation of the upper extremities accompanied by comminuted fractures of the metacarpals, wrists, and forearms were found in two of the suicide cases.’
    • ‘He fractured the fourth metacarpal in his right hand and had to have a plate and six screws inserted into the hand.’
    • ‘He had missed 16 games following surgery to repair a fracture of the fourth metacarpal in his left hand.’
    • ‘The fracture extends to the carpometacarpal joint and the displacement is made worse and more unstable by the abductor muscles of the first metacarpal.’
    • ‘The needle enters just proximal to the first metacarpal on the extensor surface.’
    • ‘Fractures of the body of the hamate may occur from trauma and usually occur in combination with fractures of the base of the fourth and fifth metacarpals.’
    • ‘Nondisplaced fractures of the base of the metacarpals are treated with immobilization in a short arm cast.’
    • ‘Fracture of the distal aspect of the fifth metacarpal is a relatively common presentation.’
    • ‘The finger's bone structure includes three phalanges and a metacarpal.’
    • ‘It will mean an amputation of your little finger as well as the metacarpal; what we call a ray amputation.’
    1. 1.1Any of the bones in an animal's forelimb equivalent to the metacarpals.
      • ‘Research has shown a decrease in bone optical density of the third metacarpal in young horses soon after the onset of race training or when moved from pasture to stalls.’
      • ‘All foretoes are long and thin, but the third is extraordinarily so due to an especially elongated metacarpal.’
      • ‘Breviparopus taghaloutensis may have had metacarpals I and V more tightly connected to the central metacarpals.’
      • ‘Even stranger, while the hindfeet have a cannon bone, the third and fourth metacarpals of the forefeet are either unfused or only partially fused.’
      • ‘The fourth is a relatively small bone that fuses to metacarpal III in late birds.’
      • ‘The small size of the presumable distal articular surfaces of metacarpals II and III suggests the presence of extremely reduced second and third digits, as in Shuvuuia deserti, the closest known relative of Mononykus.’
      • ‘The hypothesis states that theropods, including birds, evolved to develop digits 1-2-3 distal to the metacarpals 2-3-4.’
      • ‘The third and fourth metacarpals (front limbs) and metatarsals (hind limbs) are fused to form an elongated cannon bone (a condition also seen in antilocaprids and bovids).’
      • ‘For example, the front footprints indicate the metacarpals - the hand bones on people - were held in a semicircular arrangement unique to sauropods.’
      • ‘Canids larger than a coyote are represented by four cervical vertebrae, one rib fragment, long bone fragments, one calcaneus, and one metacarpal.’
      • ‘These bones are the right size and shape, and in the right position, to be provisionally identified as metacarpals.’
      • ‘This specimen consists of a nearly complete tail, the right forelimb complete through the metacarpals, both sternal plates, and both ischia.’
      • ‘Previously, Tate had referred Coelops species to the subfamily Coelopinae on the basis of characters of the tail, pinna, noseleaf, metacarpals, and four craniodental features.’
      • ‘The entries were obtained in a study of aging in horse bone, specifically the third metacarpal.’
      • ‘In the horse, the limb is adapted for running: in the forelimb, lateral digits are reduced, the central metacarpal is lengthened, and the radius and ulna are fused for greater strength.’
      • ‘These early sauropods, however, had not yet evolved the tightly arched arrangement of metacarpals diagnostic of neosauropods.’
      • ‘It was a small animal with relatively simple quadrate teeth, a modestly enlarged third metacarpal, and digitigrade stance.’
      • ‘‘His eye was caught by a particular bone - a metacarpal, the equivalent to one of the long bones in the palm of the hand,’ said John Smith, the curator of geology at the Museum of Science.’


  • Relating to the metacarpals.

    • ‘The tendons may be attached to the second and third metacarpal bones.’
    • ‘At the wrist, branches of the radial artery include the dorsal carpal and first dorsal metacarpal arteries.’
    • ‘The insertion may ascend on the lateral face of the radius or may be extended distally to the navicular, trapezium, or base of the third metacarpal bone.’
    • ‘This behavior is characterized by consistent covariations in the angular excursion of the metacarpal and proximal interphalangeal joints.’
    • ‘Flexor carpi radialis is a fusiform muscle that inserts onto the base of the second metacarpal bone.’
    • ‘Deep in the palm there are other small muscles between the metacarpal bones.’
    • ‘Palmar metacarpal arteries and superficial palmer branches arise from the radial artery.’
    • ‘When the arch is absent, the digital arteries arise from enlarged metacarpal arteries from the deep palmar arch or from enlarged dorsal metacarpal arteries.’
    • ‘A nodule secondary to the tenosynovitis is usually palpable in the region of the metacarpal head of the affected tendon.’
    • ‘Examination reveals tenderness over the hook of the hamate, which lies on a line between the pisiform and second metacarpal head.’
    • ‘However, bone mineral content, breaking strength, metacarpal bone size, and ultrasound speed may not peak until 5 to 6 years of age.’
    • ‘A small separate slip may extend from the pisiform bone to a metacarpal bone, forming the pisimetacarpeus muscle.’
    • ‘Transferred to a hospital in East Grinstead, he underwent surgery to remove a finger and metacarpal bone, but the problems did not end there.’
    • ‘Extensor carpi radialis longus arises from the lateral epicondylar ridge of the humerus and inserts onto the second metacarpal bone.’
    • ‘Once there, he examined the girl's hand and found evidence suggestive of a nondisplaced fourth metacarpal fracture, with no neurovascular compromise.’
    • ‘I flipped over, and I dislocated a metacarpal joint in my wrist.’
    • ‘Reduction may be done without anesthesia or with a metacarpal block.’
    • ‘Note that it's the accessory muscle that inserts onto the bases of the first and second metacarpal bones.’
    • ‘In one study, 80% of metacarpal fractures from athletic trauma were stable.’
    • ‘The dorsal terminal branches may encroach on the radial side of the hand, often reaching the radial side of the second metacarpal bone and even the dorsum of the first phalanx of the thumb.’