An orthopedic knee brace includes an upper medial upright； a lower medial upright； an upper lateral upright； a lower lateral upright； a medial hinge connected rotatably to the upper and lower medial uprights； a lateral hinge connected rotatably to the upper and lower lateral uprights； and wherein one of the medial and lateral hinges is configured such that its respective uprights rotate from a flexion to an extended relative positioning while striking a radially-decreasing arc, while the other of the medial and lateral hinges is configured such that its respective uprights rotate from a flexion to an extended relative positioning while striking a radially-increasing arc.
