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脊柱是人体骨骼结构中最重要、最复杂的部分。它拥有26个可活动的椎骨,23个椎间盘和124个关节与关节囊,一定数量的韧带及椎旁肌肉。它们相互连接构成脊柱,成为具有弯曲、扭转并支撑身体大部分重量,协调身体各种运动的一套系统。脊柱可分为颈椎、胸椎、腰椎、骶(音dǐ)椎和尾椎5部分。
The spine is the most important and complex part of the body’s skeletal structure. It has 26 movable vertebrae, 23 discs and 124 joints and joint capsules, a number of ligaments and paravertebral muscles. They connect with each other to form the spine, a system that bends, twists and supports most of the body’s weight and coordinates the body’s movements. Spine can be divided into cervical, thoracic, lumbar, sacral (tone dǐ) vertebra and caudal 5 parts.