Knees adjectives are listed in this post. Each word below can often be found in front of the noun knees in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing KNEES.
aged, arthritic, bad, bare, bended, bent, bony
broken, bruised, cypress, dimpled, dirty, fat, feeble
front, great, his, knobby, little, mighty, naked
old, own, poor, shaky, skinned, sore, staggering
stiff, strong, stubborn, supple, suppliant, then, thin
up, upraised, very, weak, white, wobbly
Hope this word list had the adjective used with knees you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.