A knee brace (10) divided into anterior and posterior halves including a ventilated proximal and distal members (40, 42). The brace (10) further including at least one substantially inelastic cross strap (18, 20) adjustable in length and connected to the proximal and distal members (40, 42). The cross strap (18, 20) has first and second portions which intersect at an intersection point (21) located between the proximal and distal members (40, 42) and posterior of the frontal plane of the brace. Tightening devices (22, 23) are provided for incrementally applying tension to the cross strap (18, 20), and buckle assemblies connect the cross strap (18, 20) to the proximal and distal members (40, 42). Ventilated spacer elements (46, 48) having a frictional feature are provided for securing the brace against the leg of a wearer of the brace. The spacer elements (46, 48) generally correspond to the proximal and distal members (40, 42).
