Post-instability arthritis: the result of cartilage harm that happens with several dislocations or subluxations during the joint A plastic button, or cover, is used to resurface the bottom on the patella. This button will line up with a skinny steel part that is definitely accustomed to resurface the trochlear groove https://neck-pain-treatment-docto85948.get-blogging.com/34734712/everything-about-knee-cap-replacement