羽步并退左转步与滑轴步。
骨性关节炎是滑膜关节的退变性疾病，其特点是关节疼痛、僵直、关节活动受限。
Osteoarthritis is a degenerative disorder of the synovial joints that is characterised by joint pain, stiffness and limited range of movement.
骨性关节炎是滑膜关节的退变性疾病，其特点是关节疼痛、僵直、关节活动受限。
Osteoarthritis is a degenerative disorder of the synovial joints that is characterised by joint pain, stiffness and limited range of movement.
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