A lockable orthosis assembly comprising: an internal/external rotation pivot hub defining an axial hub opening ; a hub base plate defining a plate opening , the hub base plate pivotally engaged with the internal/external rotation pivot hub and comprising a slide member ; an abduction support panel defining a panel opening and having at least one hub base plate adjustment receiver proximate the panel opening; a hub lock knob proximate the hub base plate adjustment receiver, the hub lock knob defining a mating opening; and a hub lock down axially disposed through the axial hub opening, the plate opening, and the panel opening, the hub lock down comprising a mating end mated to the mating opening of the hub lock knob, characterised in that : the abduction support panel is disposed between the hub base plate and the hub lock knob; and an assembly of the hub lock down, the internal/external rotation pivot hub, the hub base plate, and the hub lock knob is translatably engaged through the panel opening of the at least one hub base plate adjustment receiver of the abduction support panel, and in that : the lockable orthosis assembly comprises a hinged frame comprising the abduction support panel coupled to a torso support panel through a locking abduction hinge . an internal/external rotation pivot hub defining an axial hub opening ; a hub base plate defining a plate opening , the hub base plate pivotally engaged with the internal/external rotation pivot hub and comprising a slide member ; an abduction support panel defining a panel opening and having at least one hub base plate adjustment receiver proximate the panel opening; a hub lock knob proximate the hub base plate adjustment receiver, the hub lock knob defining a mating opening; and a hub lock down axially disposed through the axial hub opening, the plate opening, and the panel opening, the hub lock down comprising a mating end mated to the mating opening of the hub lock knob, characterised in that : the abduction support panel is disposed between the hub base plate and the hub lock knob; and an assembly of the hub lock down, the internal/external rotation pivot hub, the hub base plate, and the hub lock knob is translatably engaged through the panel opening of the at least one hub base plate adjustment receiver of the abduction support panel, and in that : the lockable orthosis assembly comprises a hinged frame comprising the abduction support panel coupled to a torso support panel through a locking abduction hinge . the abduction support panel is disposed between the hub base plate and the hub lock knob; and an assembly of the hub lock down, the internal/external rotation pivot hub, the hub base plate, and the hub lock knob is translatably engaged through the panel opening of the at least one hub base plate adjustment receiver of the abduction support panel, and in that : the lockable orthosis assembly comprises a hinged frame comprising the abduction support panel coupled to a torso support panel through a locking abduction hinge . the lockable orthosis assembly comprises a hinged frame comprising the abduction support panel coupled to a torso support panel through a locking abduction hinge . <EOS>