Sinding-Larsen Johansson disease, first described in 1921, is one of the osteochondroses. It can be a cause of anterior knee pain. It is usually seen in boys aged 12-14; in girls it occurs less often and at a younger age. Pain is usually related to activity and is typically over the inferior pole of the patella. The incidence of Sinding-Larsen Johansson disease is unknown.
This is a companion discussion topic for the original article at https://patient.info/doctor/sinding-larsen-johansson-disease