Osteoarthritis is associated with all of the following except -
Radiological features of osteoarthritis 

The diagnosis of OA can be made on x-ray which shows:-

i) Narrowing of joint space → Earliest manifestation                                    
ii) Spurring' or 'lipping' of the joint from the formation of osteophytes  
iii) Loose bodies
iv) Subchondral sclerosis
v) Subchondral cyst
vi) Deformity of the joint
Decreased joint space
Subchondral sclerosis
Osteophyte formation
Ca++deposition in joint space