Rheumatoid arthritis commonly affects the -: (A) Cervical spine, (B) Thoracolumbar spine, (C) Lumbar spine, (D) Sacral spine
Answer is A. Ans. is 'a' i.e., Cervical spine o In decreasing frequency, the metacarpophalangeal (MCP), wrist, proximal interphalangeal (PIP), knee, metatarsophalangeal (MTP), shoulder, ankle, cervical spine, hip, elbow and temporomandibular joints are most commonly affected.