Reactive arthritis most commonly presents with a tetrad of urethritis, conjunctivitis, mucocutaneous lesions, and oligoarthritis. which of the following joints are most commonly involved with this condition? (a) sacroiliac joints(b) metatarsophalangeal joints (c) large weight-bearing joints (d) metacarpophalangeal joints (e) distal interphalangeal joints

(A) sacroiliac joints

Explanation:

Reactive arthritis can be define as a condition which is associated with the inflammation of joints specifically the sacroiliac joints and joints of the lower body. This occurs due to the infection in an area other than the joints. The joint inflammation is characterized by swelling, warmness in and around the joints, redness and pain. Additional symptoms include inflammation of the urinary tract, inflammation of the lines of the eyelids and eye membrane, fever, pain in lower back and heel, and weight loss.  

This is caused by the bacterial infection belonging to the genus of Campylobacter, Shigella, Salmonella, Chlamydia and Yersinia.  

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