感谢医学前辈把仔细观察与认真总结的经验无私分享！

患者通常会使用“舒适”的那条腿：凹侧的腿用来下蹲，凸侧的腿用来起身。这将增加腰椎的凸度。（图 105、106）
Most often the patient will use the 'comfortable' leg: the leg on the concave side, to go down, and the convex sided leg to get up. This will increase the lumbar convexity. (Figs. 105, 106).