Method and apparatus for spinal stabilization
View Patent ↗A method and apparatus of limiting at least one degree of movement between a superior vertebral body, an inferior vertebral body, and an intermediate vertebral body that is disposed between the superior and inferior vertebral bodies of a patient. The method can comprise: advancing a distal end of a stabilization device into a pedicle of the intermediate vertebral body; positioning a proximal portion of the stabilization device such that the proximal portion limits at least one degree of movement between the superior vertebral body and the intermediate vertebral body by contacting a surface of the superior vertebral body; and advancing a distal end of a fixation device into a facet of the intermediate vertebral body and into a facet or pedicle of the inferior vertebral body for stabilizing the intermediate vertebral body and the inferior vertebral body.
1. A method of limiting at least one degree of movement between a superior vertebral body, an intermediate vertebral body, and an inferior vertebral body of a patient, the intermediate vertebral body being disposed between the superior and inferior vertebral bodies, comprising:
advancing a distal end of a stabilization device into a pedicle of the intermediate vertebral body;
positioning a proximal portion of the stabilization device such that the proximal portion limits at least one degree of movement between the superior vertebral body and the intermediate vertebral body by contacting a surface of the superior vertebral body; and
advancing a distal end of a fixation device into a facet of the intermediate vertebral body and into a facet or pedicle of the inferior vertebral body for stabilizing the intermediate vertebral body and the inferior vertebral body.
2. The method of claim 1 , wherein the step of positioning a proximal portion of the stabilization device comprises advancing a proximal anchor distally over an elongated body of the stabilization device.
3. The method of claim 2 , wherein the step of advancing a proximal anchor distally over an elongated body of the stabilization device comprises proximally retracting the elongated body with respect to the proximal anchor.
4. The method of claim 2 , wherein the step of advancing a proximal anchor distally over an elongated body of the stabilization device comprises applying a distal force to the proximal anchor.
5. The method of claim 1 , further comprising maintaining the patient in a face down position during the step of advancing a distal end of a stabilization device into the pedicle of the intermediate vertebral body.
6. The method of claim 1 , wherein the step of advancing a distal end of a stabilization device into a pedicle of the intermediate vertebral body comprises advancing the distal end of the stabilization device through the pars of the intermediate vertebral body.
7. The method of claim 1 , wherein the steps of advancing a distal end of a stabilization device into a pedicle of the intermediate vertebral body and positioning a proximal portion of the stabilization device are accomplished through a minimally invasive surgical approach.
8. The method of claim 1 , wherein the step of advancing a distal end of a stabilization device into a pedicle of the intermediate vertebral body comprises rotating the distal end of the stabilization device.
9. The method of claim 1 , wherein advancing a distal end of a stabilization device into a pedicle of the intermediate vertebral body further comprises advancing the stabilization device over a guidewire.
10. The method of claim 1 , wherein advancing a distal end of a stabilization device into a pedicle of the intermediate vertebral body further comprises advancing the stabilization device through an expanded tissue tract.
11. The method of claim 1 , wherein the superior vertebral is located caudal to the inferior superior body.
12. A method of limiting at least one degree of movement between a superior vertebral body, an intermediate vertebral body, and an inferior vertebral body of a patient, the intermediate vertebral body being disposed between the superior and inferior vertebral bodies, comprising:
advancing a distal end of a first stabilization device into a pedicle of the intermediate vertebral body;
positioning a proximal portion of the first stabilization device such that the proximal portion abuts against a surface of an intermediate articular process of the superior adjacent vertebral body to limit at least one degree of movement between a superior vertebral body and the intermediate vertebral body;
advancing a distal end of a second stabilization device into a pedicle of the intermediate vertebral body such that it is positioned with bilateral symmetry with respect to the first stabilization device;
positioning a proximal portion of the second stabilization device such that the proximal portion abuts, with bilateral symmetry with respect to the first stabilization device, against a surface of second intermediate articular process of the superior adjacent vertebral body to limit at least one degree of movement between the superior vertebral body and the intermediate vertebral body; and
advancing a distal end of a fixation device into a facet of the intermediate vertebral body and into a facet of the inferior vertebral body for stabilizing the intermediate vertebral body and the inferior vertebral body.
13. The method of claim 12 , wherein the first and second stabilization device limit flexion or extension between the superior vertebral body and the intermediate vertebral body.
14. The method of claim 12 , wherein the first and second stabilization device limit lateral movement between the superior vertebral body and the intermediate vertebral body.