In the case of the latter, it's why people often feel stiffness and pain in their " weight bearing" joints, such as the knees and hips.
这就是为什么人们的“负重”关节(如膝盖和髋关节)经常感到僵硬和疼痛的原因。
英语百科
Weight-bearing
In orthopedics, weight-bearing is the amount of weight a patient puts on the leg on which surgery has been performed. In general, it is described as a percentage of the body weight, because each leg of a healthy person carries the full body weight when walking, in an alternating fashion.