Related Clues:

• __-jerk reaction
• Karate weapon
• Bouncing spot
• Place for a footballer's pad
• Word with ''high'' or ''jerk''
• Common injury site
• Low joint?
• Kilt's stopping point
• Patella location
• It's found under a hip joint
• 'Oh! Susanna' closer
• Oft-scraped site
• It might be tested with a hammer
• A midi covers it
• Bottom of the strike zone