Larsen Johansson Disease
| Classification according to ICD-10 | |
|---|---|
| M92.4 | Juvenile Patellar Osteochondrosis - Secondary Ossification Center (Larsen-Johansson Disease) |
| ICD-10 online (WHO version 2019) | |
The patellar tendinitis ., Syn Crohn Sinding-Larsen-Johansson (s: Sinding-Larsen-Johansson disease ), is a painful inflammatory response of the origin of the patella (kneecap tendon) at the tip of the patella , in which a piece of bone from the The kneecap can loosen and necrotize (die). The disease is therefore one of the osteonecrosis . Sinding-Larsen-Johansson's disease is thought to be caused by overuse.
In the X-ray image , a change of the bone is to detect the ultrasound additionally shows the swelling and inflammatory changes of the tendon, in the magnetic resonance imaging a is also edema adjacent be seen in the patella.
The treatment is protracted (three to twelve months) and symptom-oriented (sports break, cooling, painkillers, anti-inflammatory preparations, physiotherapy); As in Osgood-Schlatter's disease, rounded bones ( ossicles ) can form at the lower insertion of the patellar tendon at the end of growth , which are painful when the tendon rubbing them. In the event of symptoms, these ossicles are an indication for surgical removal. Overall, the prognosis for the disease is good.
The Swedish doctor Sven Christian Johansson (1880-1976) and his Norwegian colleague Christian Magnus Falsen Sinding-Larsen (1866-1930) published case reports on the disease in 1921 and 1922, independently of one another .
