The Journal of Bone and Joint Surgery, Vol 59, Issue 5 617-621, Copyright © 1977 by Journal of Bone and Joint Surgery, Inc
Painful knees in older patients: radionuclide diagnosis of possible osteonecrosis with spontaneous resolution
PA Lotke, ML Ecker and A Alavi
The syndrome of osteonecrosis of the femur at the knee presents as sudden
onset of knee pain in elderly patients. It is classically associated with a
subchondral radiolucency and a positive radionuclide bone scan. The lesion
may progress to collapse of the bone. In this report, twelve cases are
described in which the clinical entity of osteonecrosis of the femoral
condyle was diagnosed because the patients had a clinical picture identical
to that of osteonecrosis and also had positive bone scans. However,
roentgenographic changes supposedly diagnostic of the condition were not
seen. In twelve patients, arthrotomy was avoided. They became asymptomatic
and their bone scans returned to normal in a few months.