Like Osgood-Schlatter and Sinding-Larsen-Johansson disease, Sever disease, or calcaneal apophysitis, is a traction apophysitis. Repetitive impact and Achilles tendon traction lead to complaints of ...
The problem is not with the classic presentation of PsA—that is, with oligoarthritis, DIP involvement, calcaneal enthesitis, and dactylitis—but with the group of patients who have seronegative ...