Clinical Scenario Question about Osteoarthritis
A 65-year-old obese woman with a diagnosis of osteoarthritis (OA) has been having increased pain in her right knee that is made worse with movement and weight-bearing and is relieved by rest. Physical examination reveals an enlarged joint with a varus deformity; coarse crepitus is felt over the joint on passive movement.
- Compare the pathogenesis and articular structures involved in OA with those of RA.
- What is the origin of the enlargement of the affected joint, the varus deformity, and the crepitus that is felt on movement of the affected knee?
- Explain the predilection for involvement of the knee in persons such as this woman.