Osteonecrosis of the patella in patients with nontraumatic osteonecrosis of the femoral head: MRI findings in 60 patients

Author: Sakai Takashi   Sugano Nobuhiko   Nishii Takashi   Haraguchi Keiji   Yoshikawa Hideki   Ohzono Kenji  

Publisher: Informa Healthcare

ISSN: 0001-6470

Source: Acta Orthopaedica Scandinavica, Vol.71, Iss.5, 2000-10, pp. : 447-451

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Abstract

We examined both knees in 60 patients with nontraumatic osteonecrosis of the femoral head with three-dimensional MRI. We found osteonecrosis of the patella in 9 patients (10 knees) and osteonecrosis of the femoral or tibial condyles/metaphyses in 35 patients (61 knees). In the patella, the necrosis was located in the proximal half and tended to develop in patients with other necrotic lesions in the knee.

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