A radiolucent halo-type retractor (20) having a radiolucent curvilinear
fixed member (32) connected to a radiolucent curvilinear movable member
(34). Each of the fixed and movable members has a radiolucent male
coupling (44, 46) projecting outward from a convex surface (40, 42) to
receive a female coupling of a retractor arm. The ends (60, 68) of the
movable member are separated by a distance less than a distance
separating the ends (56, 64) of the fixed member. Radiolucent starburst
connectors (58, 62) are disposed on first ends of the fixed and movable
members to secure the fixed and movable members at a desired angular
orientation. Radiolucent starburst connectors (66, 70) are also disposed
on second ends of the fixed and movable members to secure the fixed and
movable members at a desired angular orientation. A pin (72) rotatably
connects the first ends. A locking shaft (76) rotatably connects the
second ends and is operable to lock the fixed and movable members in a
desired orientation.