I've been falling for the last 25 years so I've damage my knee (Good 1) to the point where the only thing left of my knee is my bones but my bones or rubbing together had a MRI it said more or less everything that makes up a knee is destroyed or gone I rather have kids then this knee PAIN OH YAH the leg that was badly broken and the reason I'm crippled and walk with a limp don't real bother me actually should be my good leg