Abstract: Devices, systems, and methods relating to biased angle receivers for modular pedicle screw assemblies are described herein. The receiver may include a body and a retainer. The body may be configured to be coupled to a bone fastener and a rod for spinal stabilization. The body may also include a base defining an opening from a top end to a bottom end of the base and having a bottom axis at the bottom end of the base. The bottom axis may be obliquely angled with respect to the longitudinal axis of the body. A chamber may be defined within the base and be in communication with the opening. A retainer may be disposed in the chamber and may be configured to expand in an upper section of the chamber to receive a bulbous head of the bone fastener up through a bottom opening of the retainer.

Abstract: Devices, systems, and methods relating to biased angle receivers for modular pedicle screw assemblies are described herein. The receiver may include a body and a retainer. The body may be configured to be coupled to a bone fastener and a rod for spinal stabilization. The body may also include a base defining an opening from a top end to a bottom end of the base and having a bottom axis at the bottom end of the base. The bottom axis may be obliquely angled with respect to the longitudinal axis of the body. A chamber may be defined within the base and be in communication with the opening. A retainer may be disposed in the chamber and may be configured to expand in an upper section of the chamber to receive a bulbous head of the bone fastener up through a bottom opening of the retainer.