Patent ID: 8025680

Claim:
A strut system configured to extend between a superior and inferior pedicular cross member component, the strut system including an adjustable vertical distraction member having a minimum length and a maximum length, comprising: a first attachment element configured to connect with one of the superior and inferior pedicular components during use, the first attachment element including a receiving portion; a second attachment element configured to connect with the other of the superior and inferior pedicular components during use, the second attachment element including a piston partially disposed within an interior of and concentric to the receiving portion of the first attachment element during use, wherein the piston is configured to travel longitudinally within the interior of the receiving portion during use, and wherein a distal end of the piston includes a detent; and a retaining mechanism configured to engage the detent of the piston during use to inhibit longitudinal movement of the piston, thereby limiting a longitudinal travel distance of the piston within the receiving portion, wherein the retaining mechanism is selectively positionable in one of at least a first discrete position and a second discrete position, wherein the retaining mechanism limits the longitudinal travel of the piston to a first distance when positioned in the first discrete position and limits the longitudinal travel of the piston to a second distance greater than the first distance when positioned in the second discrete position, and wherein the receiving portion has an exterior wall and wherein the retaining mechanism comprises a pin member extending through the wall into an interior of the receiving portion.