An adjustable orthopedic back brace includes: a first side panel having a distal end and a proximal end； a second side panel having a distal end and a proximal end； a rotating gear in geared communication with a first rack gear, the first rack gear connected to the proximal end of the first side panel, the rotating gear in geared communication with a second rack gear, the second rack gear connected to the proximal end of the second side panel； a mechanical advantage member rotatable with and providing mechanical advantage for the rotating gear； and an actuator connected operably to the mechanical advantage member for turning the member and the rotating gear to cause a translational movement of (i) the first rack gear and the first side panel and (ii) the second rack gear and the second side panel.
