Historical clue formulations

• Middle of the leg — 2022-10-17
• What the quadriceps muscle connects to — 2022-02-20
• Joint protector — 2019-05-10
• Largest sesamoid bone in the body — 2018-10-06
• Patella — 2018-05-08
• Gangster's target, maybe — 2008-07-30
• Patella — 2004-08-11
• Patella — 1999-10-25