I recently had an MRI on my right knee and right shoulder. The radiologist mentioned the possibility that several irregularities seen were AVN. I took steriod eye drops for about 20 years and also some inhaled steriods (nasacort)for nasal allergies. My allergies seemed to get much better and I haven't taken any steriods for at least 10 years. I have never taken "high dose" treatments. Would this type of use over 10 years ago be responsible?