n.尺骨

原形：ulna复数：ulnae

The ulna is one of the two bones in the forearm, located on the side opposite to the thumb.
尺骨是前臂上的两块骨头之一，位于远离大拇指的一侧。
In humans, the ulna articulates with the humerus and radius forming the elbow joint.
在人体中，尺骨与肱骨和桡骨相接形成肘关节。
A fracture of the ulna can lead to pain and limited mobility in the affected arm.
尺骨骨折会导致受影响手臂疼痛并限制其活动能力。
During surgery, the surgeon carefully aligned the broken pieces of the patient's ulna before securing them with a metal plate.
手术期间，外科医生小心地将患者断裂的尺骨对齐，然后用金属板固定。
The muscles that extend the wrist attach to the ulna’s lateral epicondyle.
伸展手腕的肌肉附着在尺骨的外上髁上。
The ulnar nerve runs along the back of the ulna, providing sensation to the little finger and half of the ring finger.
尺神经沿尺骨背面运行，为小指和无名指的一半提供感觉。
Anatomically, the ulna is longer than the radius bone in the forearm.
解剖学上，尺骨比前臂中的桡骨长。
Due to the impact during the fall, he sustained a hairline fracture of his ulna.
由于跌倒时的撞击，他的尺骨出现了裂缝骨折。
After the physical therapy, she regained full range of motion in her arm following the ulna fracture recovery.
物理治疗后，在尺骨骨折恢复后，她的手臂恢复了全范围的活动能力。
In some animals, such as birds, the ulna plays a crucial role in supporting the wing structure.
在一些动物（如鸟类）中，尺骨在支撑翅膀结构方面发挥着至关重要的作用。