Related Clues:

• It's held on a crowded bus
• Wounded or bended follower
• Baby seat of a sort
• Ace bandage site
• Guitarist's aid
• Banjo supporter
• Place to play horsey
• Common arthritis site
• Place for a pad, maybe
• Patella place
• Spaghetti ___
• ACL's locale
• Guitar holder
• Midleg joint
• Proposer's prop?