Patellar tendinitis

The Larsen - Johansson disease, Syn disease Sinding -Larsen - Johansson ( en: Sinding -Larsen - Johansson disease), is a painful inflammation of the origin of the patellar tendon ( patellar tendon ) at the top of the kneecap, in which a piece of bone from the can solve kneecap and necrosis ( die). Therefore, the disease is one of the osteonecrosis. It is believed that the disease Sinding -Larsen - Johansson is caused by overloading.

The patients, mostly young males and athletes complain of pain and swelling below the kneecap, which improves for Conservation ( patellar tendinitis, Eng. Jumper 's knee ). Radiographically, an erosion of the bone can be seen, sonography also shows the swelling and inflammatory changes of the chord in the MRI edema is also adjacent to recognize in the kneecap.

The treatment is lengthy ( three to twelve months) and symptomatic ( conservation, cooling, painkillers, anti-inflammatory drugs, physiotherapy); the prognosis is good.

The Swedish physician Sven Christian Johansson (1880-1976) and his Norwegian colleague Christian Magnus Sinding -Larsen Falsen (1866-1930), published in 1921 and 1922 independently case reports of the disease.