A spine retractor provides lateral access to the spine for distracting soft tissue and psoas muscle for spinal fusion procedures utilizing position controllable blades. The retractor allows concerted linear distraction of two lateral blades and separate linear distraction of one medial blade. Individual angulation assemblies associated with each blade provides separately controllable angulation. Handles attached to the two lateral blades control their distraction while a medial knob controls medial blade distraction. An expansion knob associated with each handle provides individually precise distraction of its associated blade. Each angulation assembly comprises an angulation knob that threads into a distal arm of a blade holder assembly and is received into a spherical ball seated in a spherical pocket in a mating proximal arm of the blade holder assembly. Torque applied to the spherical ball by the angulation knob causes distal arm angulation relative to the proximal. Each distal arm holds a blade assembly having a blade.
