osteoarthritis
"I just got mine today. I am 38 years old. I have some bone on bone. I found a great doctor.  They marked my knees...sprayed something to numb it. BAM NO PAIN, I FELT MORE PRESSURE THAN ANYTHING. Walking out, I felt AWESOME. NO CREAKING IN THE KNEES AND I AM ONLY ON VISIT ONE. CAN'T WAIT."