Which of the following skeletal disorder is an example of autoimmune disorder?

Which of the following skeletal disorder is an example of autoimmune disorder?

مندرجہ ذیل میں سے کون سی اسکیلیٹل ڈس آرڈر آٹو امیون ڈس آرڈر کی ایک مثال ہے؟
Explanation

Rheumatoid arthritis is an example of an autoimmune disorder.

In this condition, the immune system mistakenly attacks the joints.

It leading to inflammation, pain, and potential joint damage.