Osteoarthritis (oa), or degenerative joint disease most commonly affects patients who are middle-aged and older.

骨关节炎(OA)，或退化性关节疾病，最常见的影响病人是中年和老年人。

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Osteoarthritis (oa), or degenerative joint disease most commonly affects patients who are middle-aged and older.

骨关节炎(OA)，或退化性关节疾病，最常见的影响病人是中年和老年人。

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