40 years patient having arthritis of PIP and DIP along with a carpometacarpal joint of the thumb and sparing of the wrist and metacarpophalangeal joint, most likely diagnosis is -
Involvement of PIP, DIP and 1st Carpometacarpal joint (Carpometacarpal joint of thumb) with sparing of the wrist and the metacarpophalangeal joint is characteristic of OA.
Rheumatoid arthritis
Osteoarthritis
Psoriatic arthritis
Pseudogout