A spondylolisthesis reduction kit containing: a plurality of horizontal plates ; one or more pairs of stacked vertical plates ; a first set of bolts , wherein the first set of bolts is configured to couple the one or more pairs of stacked vertical plates to at least a second horizontal plate , wherein each of the first set of bolts includes: a square-shaped head , a non-threaded portion proximal the square-shaped head , and a threaded portion proximal the non-threaded portion , a second set of bolts , wherein the spondylolisthesis reduction kit is configured to couple one or more pairs of stacked vertical plates to a first horizontal plate to facilitate realignment of a listhetic vertebra wherein each of the bolts in the second set of bolts includes: a square-shaped head , a non-threaded portion proximal to the square-shaped head , and a first threaded portion proximal to the non-threaded portion , a second threaded portion , and a waist portion , wherein the waist portion is configured to separate the first threaded portion and the second threaded portion , wherein the combined length of each of the bolts in the second set of bolts is greater than the combined length of each of the bolts in the first set of bolts a plurality of horizontal plates ; one or more pairs of stacked vertical plates ; a first set of bolts , wherein the first set of bolts is configured to couple the one or more pairs of stacked vertical plates to at least a second horizontal plate , wherein each of the first set of bolts includes: a square-shaped head , a non-threaded portion proximal the square-shaped head , and a threaded portion proximal the non-threaded portion , a second set of bolts , wherein the spondylolisthesis reduction kit is configured to couple one or more pairs of stacked vertical plates to a first horizontal plate to facilitate realignment of a listhetic vertebra wherein each of the bolts in the second set of bolts includes: a square-shaped head , a non-threaded portion proximal to the square-shaped head , and a first threaded portion proximal to the non-threaded portion , a second threaded portion , and a waist portion , wherein the waist portion is configured to separate the first threaded portion and the second threaded portion , a square-shaped head , a non-threaded portion proximal the square-shaped head , and a threaded portion proximal the non-threaded portion , a second set of bolts , wherein the spondylolisthesis reduction kit is configured to couple one or more pairs of stacked vertical plates to a first horizontal plate to facilitate realignment of a listhetic vertebra wherein each of the bolts in the second set of bolts includes: a square-shaped head , a non-threaded portion proximal to the square-shaped head , and a first threaded portion proximal to the non-threaded portion , a second threaded portion , and a waist portion , wherein the waist portion is configured to separate the first threaded portion and the second threaded portion , a square-shaped head , a non-threaded portion proximal to the square-shaped head , and a first threaded portion proximal to the non-threaded portion , a second threaded portion , and a waist portion , wherein the waist portion is configured to separate the first threaded portion and the second threaded portion , <EOS>