Ultimately, rheumatoid arthritis can become worse over time and result in the limited ability to carry out routine activities since deformedjoints result.
随着时间的过去，风湿性关节炎会越来越糟糕，最终因为关节变形会导致日常活动能力下降。
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In this autoimmune disorder, the joints become painful, swollen, stiff and, in severe cases, deformed.