Hypomobility, or too little movement in the joint, can be caused by degenerative joint diseases such as arthritis.

活动度减少，即骶髂关节活动太少，可因退变性关节病变造成，比如关节炎。

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Hypomobility, or too little movement in the joint, can be caused by degenerative joint diseases such as arthritis.

活动度减少，即骶髂关节活动太少，可因退变性关节病变造成，比如关节炎。

youdao