 [ Symptoms ] hip replaced with radiation now my bones are weak [ Disease ] i am answering this as simply a patient with osteoarthritis of the knees at age 46 my activity level is i did play racquetball 2 3xweek but have eliminated that due to severe pain in knees i now keep active officiating soccer throughout most of the year including high school level soccer playing linesman takes its toll on your knees my experience with co steroid injections initially was very positive it reduced inflammation almost instantly and relieved pain for again initially upwards to 3 months however my last injections only lasted about 3 weeks my doctor has now introduced me to euflexxa which are injections of a hyaluronic acid that acts as a cushion in the joints of the knee notice i am not a doctor i can say i am on treatment 2 of 3 required shots and have noticed an incredible sense of pain relief the test will truly come when i expose my knees to physical activity like i normally do and see how long these shots last no side effects experienced as well