| 词汇 | metacarpal |
| 释义 | metacarpal noun[ C ] anatomy specializeduk /ˌmet.əˈkɑː.pəl/ us /ˌmet̬.əˈkɑːr.pəl/ one of the five bones between the fingers and the wrist: 掌骨 a metacarpal fracture掌骨骨折 Bone structures acetabular acetabulum acromial acromioclavicular acromion foramen magnum frontal bone glenoid gnathic gynecoid osteophyte osteotomy parietal parietal bone pectoral girdle TMJ trapezoidal triquetrum true rib tubercle You can also find related words, phrases, and synonyms in the topics: The hand Examples of metacarpalmetacarpal This technique produces values of bone mineral density for the whole cross-sectional area of the metacarpal and for the two cortical edges. The origin of the metacarpal coordinate system was located on the lateral aspect of the distal end of the third metacarpus. The radiographs were scanned at the nutrient foramen of the third metacarpal with a video densitometer. Microdensitometry of the metacarpal bone has also been measured in radiographs, using an aluminium step wedge for calibration. Denham79 measured cortical bone thickness in radiographs of the second metacarpal and showed that this parameter declined with duration of hemiplegia. However, their hands were together in front of them, crossing one above the other at the level of the distal radii and ulnae, carpals, or metacarpals. The metacarpal z-axis, contained in the metacarpal frontal plane, ran from the origin proximally along the long axis of the segment at 908 to the x-axis. This claimed to have shown that women in the highest quartile of bone density at the distal radius or metacarpal had a two- to three-fold increased risk of breast cancer. Together with the fourteen phalanx bones of the fingers these metacarpal bones form five rays or poly-articulated chains. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It connects the dorsal sides of the trapezium and the first metacarpal. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The second metacarpal bone is connected to the trapezium, trapezoid, and capitate. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The arrangement of the forefoot bone ("metacarpal") columns in eusauropods was semi-circular, so sauropod forefoot prints are horseshoe-shaped. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. X-rays revealed a non-displaced fracture of the fifth metacarpal. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Humans did not evolve from knuckle-walking apes, and chimpanzees and gorillas independently acquired elongated metacarpals as part of their adaptation to their modes of locomotion. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In its proximal end, the volar plate becomes membranous and blends with the volar capsule which is attached to the head of the metacarpal bone. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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