Spinal column retaining system

摘要

An apparatus (10) for retaining first (V1) and second vertebrae (V2) of a spinal column in a desired spatial relationship includes a longitudinal member (12) positionable along the spinal column. A member, such as a plate (30), connectable with the first vertebra has first (90) and second fastener openings (110) and a portion (80) engageable with the longitudinal member. A first fastener (38) extendable through the first fastener opening in the member has a first end portion for attachment to the first vertebra and has a longitudinal axis (92). A second fastener (40) extendable through the second fastener opening in the member has a first end portion for attachment to the first vertebra and has a longitudinal axis (114). The longitudinal axes of the first and second fasteners converge at an acute angle as viewed in a sagittal plane when the first and second fasteners connect the member with the first vertebra. The member connectable with the first vertebra has a body portion and has a lip portion (150) projecting from the body portion of the member. The lip portion of the member is engageable with a surface of the first vertebra facing toward the second vertebra.