Patent ID: 9636248
Date: 2017-05-02
CPC Classifications: A61F,A61G

Claim:
1. A system comprising: a rail assembly having a first rail pivotally coupled to a second rail, each rail having a longitudinal axis; a slider block slidably mounted to the second rail; a pivot arm pivotally coupled to the slider block, wherein the pivot arm is configured to rotate about a vertical axis and a horizontal axis relative to the slider block, wherein the horizontal axis intersects the vertical axis; a sole assembly coupled to the pivot arm with a rotatable coupling configured to allow the sole assembly to rotate about a tibial axis relative to the pivot arm, wherein the vertical axis intersects the tibial axis; and a boot mounted to the sole assembly, wherein the boot is configured to receive a patient's foot and align the patient's tibia with the tibial axis; wherein the rotatable coupling includes an incremental locking mechanism including a locked position and an unlocked position; wherein, when the incremental locking mechanism is in the locked position, the incremental locking mechanism is configured to releasably lock the rotational position of the sole assembly about the tibial axis independent of the rotational position of the pivot arm about the vertical axis and independent of the rotational position of the pivot arm about horizontal axis; wherein, when the incremental locking mechanism is in the unlocked position, the incremental locking mechanism is configured to allow rotation of the sole assembly relative the incremental locking mechanism only about the tibial axis.