An orthopedic knee brace comprising first and second pockets made of a non-stretchable material which accommodate respective jointed support rods, a first portion of flexible and stretchable material that extends between the first and the second pockets, a second portion of flexible and stretchable material that extends from the second pocket to a free end, a first attachment member and a second attachment member made of non-stretchable material, which are located at said free end, the first pocket having first and second attachment members which are adapted to be respectively engaged by the first and second attachment members. The knee brace further comprises stabilization members for restricting the extension of the first and/or second portions of flexible and stretchable material.