What you have to prove
Show: (1) imaging-confirmed anatomical abnormality of the joint; (2) chronic pain, stiffness, or instability; (3) a finding on physical exam of limited range of motion; and (4) inability to ambulate effectively (weight-bearing joints) OR inability to perform fine and gross movements effectively (upper extremities).
Medical evidence SSA expects
X-ray or MRI of the joint, surgical records (arthroplasty, arthroscopy), physical therapy notes, and physician documentation of assistive-device need.
Common misconceptions
A single joint problem rarely qualifies on its own — most approvals come when multiple joints are involved or when combined with other impairments in a Medical-Vocational Allowance.