[The diagnosis and treatment of patellar instabilities].

In connection with 23 different patellar instabilities, the author makes some diagnostical and treatment consideration. The patients were between 18 and 40 years old, 13 women and 10 men. From the clinical point of view there were found 2 simple instabilities, 3 external dislocations, 6 permanent dislocations, 9 relapsed dislocations and 3 of them were habitual. The results in first time were good and excellent in 90 percent. It was a single relapse and by 4 of the patients which have been in watch for five years it was found arthrosis without major functional signs.