Protection for the patella (7)

I think it could be either:

Which length description are you looking for?:

4,3

kneepad

(Other definitions for kneepad that I've seen before include "protection for joints" , "Joint guard" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.