You’re looking at a radiograph here of the right foot of a male diagnosed with psoriatic arthritis. Note the bone spur on the back of the heel, resultant from chronic inflammation of the achilles tendon enthesis. Psoriatic arthritis belongs to a family of diseases we called Spondyloarthopathy (SpA).      Other diseases under the SpARead more about Psoriatic Arthritis and Enthesopathy[…]