Osteochondrosis of the primary ossification center of the patella (Köhler's disease of the patella) report of three cases.

Pinar H., Gul O., Boya H., Ozcan C., Ozcan O.

Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, vol.10, no.3, pp.141-3, 2002 (SCI-Expanded) identifier identifier identifier


Radiography of three boys 5-6 years old with anterior knee pain revealed increased density and irregularity of the patellar ossification centers. A search of the literature suggested that it was osteochondrosis of the primary ossification center of the patella, named after Kohler. Continuing search also revealed that it might be a normal variant instead of an osteochondrosis. A short course of activity modification led to marked improvement in all. The patients were either asymptomatic or experienced minor symptoms 18-34 months after presentation. It was concluded that the process, either physiological or pathological, has a benign course and favorable prognosis.