A patella protection system, and a knee brace including such a patella protection system. The patella protection system including an upper member to be positioned in proximity of an upper part of the wearer's leg, a lower member to be positioned in proximity of a lower part of the wearer's leg and an intermediate guard member to be positioned over the patella and operatively connected to the upper member and the lower member. The upper member and the lower member are designed to move within the intermediate guard member between a straight configuration and an angled/angulated configuration.