A knee brace that is divided into anterior and posterior sides by a
frontal plane, and having first and second sides divided by a median
plane. The knee brace includes a ventilated, flexible proximal shell
generally extending between the first and second sides on the anterior
side of the brace, and a flexible distal shell connected to the proximal
shell and generally extending across the first and second sides on the
anterior side of the brace. The distal shell has an extension segment
extending from one of the first and second sides to the posterior side of
the brace. The proximal and distal shells include suitable openings and
slots for attaching brackets and mechanical devices. The proximal and
distal shells each include a body portion and a compliant edge. The
compliant edges are formed from flexible resilient material that is
configured to extend beyond the outer perimeter of the body portion of
each the proximal and distal shells.