Functional knee orthosis with flexion-extension control Orliman made of aluminum low profile and lightweight. This product is provided with polycentric joints with flexo-extensive movement limitation. It has a non-slip interior that provides comfort as well as protection. In addition, the joints integrate condylar pads with air chamber to avoid pain caused by friction and rubbing. It also has zinc-plated steel wedges, which prevent rust in general. These wedges regulate flexion-extension with a range of limitation from 0° to 90°. It allows a full range of joint movement. The plates that incorporates the sides allow a custom fit. The fastening system is executed by means of adjustable straps, which are non-slip and integrate protective pads.