A spinal stabilization system (100) may be formed in a patient. In some embodiments, a minimally invasive procedure may be used to form a spinal stabilization system (100) in a patient. Bone fastener assemblies (102) may be coupled to vertebrae. Each bone fastener assembly (102) may include a bone fastener (108) and a collar (112). The collar (112) may be rotated and/or angulated relative to the bone fastener (108). Detachable members may be coupled to the collar (112) to allow for formation of the spinal stabilization system (100) through a small skin incision. The detachable members may allow for alignment of the collars (112) to facilitate insertion of an elongated member (104) in the collars (112). An elongated member (104) may be positioned in the collars (112) and a closure member (106) may be used to secure the elongated member (106) to the collars (112).
