I tore up my knee pretty bad in 1974, acl and miniscus removed, ligaments re-attached.

For years I would get a monthly injection of cortisone into knee, in 1984 I woke up in the middle of the night with a 105 degree temp and a knee that was swollen out to basketball size.

Was diagnosed during lenghty hospital stay as having a staph bug, doctor said that it could have come from a shot.

Staph is one of the most common infections you can get.

Staph is on the skin, staph is in the air, it can be picked up anywhere.

Before anything enters your system it has to be clean and the point of entry be clean too. Staph could have been on the tip of the needle or on the skin, it's real hard to determine how it got into your joint was what I was told.