A modular knee brace assembly includes a brace and a wedge. The brace comprises a sleeve portion comprising a first opening at a first end of the sleeve portion and a second opening at a second end of the sleeve portion, the first opening and the second opening adapted to enable a first portion of a user's body to pass through the sleeve portion and a second portion of the user's body to remain within the sleeve portion and a first mating unit comprising a plurality of discrete attachment points coupled to an outer surface of the sleeve portion. The wedge comprises a second mating unit, wherein the second mating unit is adapted to couple with a set of the plurality of discrete attachment points to support one or more portions of the user's body.