This is an inexact science, but I limit the injections to once every 6 months and at most 3 times a year for OA joints. Steriods can weaken the ligament and tendon structures of the joint, delay healing and thus injections should no tbe done too frequently.
Cortisone shots for OA in the knee
March 30, 2007 By
Is there a limit to the number of shots that one should receive and how many if so?