APPARATUS AND METHODS FOR INSERTING FACET SCREWS
An apparatus includes a first shaft (1100), a second shaft (1200), and a locking mechanism (1300). The first shaft may have a threaded portion (1126) and has an engagement portion (1110). The engagement portion of the first shaft is configured to engage a nut (1610). The second shaft may have a threaded portion (1232) and has an engagement portion" (1210). The engagement portion of the second shaft is configured to engage a screw (1650). At least a portion of the second shaft is disposed within the first shaft such that the threaded portion of the first shaft is engaged with the threaded portion of the second shaft. The locking mechanism is configured to selectively allow rotation of the second shaft relative to the first shaft.