A Knee is a part of humanoid anatomy which joins a thigh and a leg. It is made up of two joints.
History[]
In 2002, Colonel Jack O'Neill had a partially torn ligament in his knee. Because of this, he was taken off the mission list until his knee fully healed. (SG1: "Redemption, Part 1")
When the Stargate documentary was being worked on in 2003, Dr. Janet Fraiser disclosed Jack O'Neill's medical history. Of the incidents and injuries included, it was mentioned that he had three knee operations. (SG1: "Heroes, Part 1")