| 词汇 | posterior-cruciate-ligament |
| 释义 | posterior cruciate ligament noun[ C ] anatomy specializeduk /pɒsˌtɪə.ri.ə ˌkruː.ʃi.ət ˈlɪɡ.ə.mənt/ us /pɑːˌstɪr.i.ɚ ˌkruː.ʃi.eɪt ˈlɪɡ.ə.mənt/(abbreviationPCL) a piece of tissue inside the knee joint that helps keeps it firmly fixed, and connects the femur(= upper leg bone) to the tibia(= lower leg bone), helping to prevent the tibia from moving too far backwards: The anterior and posterior cruciate ligaments are intraarticular ligaments, and contribute to the stability of the knee. An injury to the posterior cruciate ligament in sports is uncommon, but can be devastating. The posterior cruciate ligament, or PCL, is not injured as frequently as the ACL. The posterior cruciate ligament can be torn by hyperextension of the knee joint. In the healthy knee, the posterior cruciate ligament acts as an anterior constraint for movement of the femur on the tibia, providing the knee joint with posterior stability. Substances & structures in the body abductor accessorius ACL actin adductor fundus funiculus fusiform glomerular glomerulus myosin navicular neuroendocrine neurohormonal neurohormone tendinous tendinum tendo tensor Th Compareanterior cruciate ligament |
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