Patient-specific osteotomy devices and methods

1. An osteotomy method comprising:

attaching a patient-specific osteotomy guide to a corresponding surface of a tibia of a patient, the osteotomy guide having a three-dimensional engagement surface configured during a preoperative plan for the patient using computer imaging to mate as a negative surface of the corresponding surface of the tibia;

drilling a guiding hole into the tibia through a drill hole of the osteotomy guide;

making an osteotomy at a patient-specific orientation through a resection slot of the osteotomy guide, the resection slot intersecting the drill hole and configured for the specific patient during the preoperative plan of the patient;

removing the osteotomy guide; and

opening first and second faces of the osteotomy to form a first angle using a patient-specific osteotomy spreader.

2. The osteotomy method of claim 1 , further comprising:

attaching an adjustable osteotomy securing device to span the osteotomy; and

securing the osteotomy at a second angle greater than the first angle.

3. The osteotomy method of claim 2 , further comprising removing the osteotomy spreader; and

implanting a patient-specific osteotomy implant into the osteotomy, the patient-specific osteotomy implant configured with a wedge angle equal to the first angle, the first angle preoperatively determined for correcting a joint misalignment of the patient.

4. An osteotomy method comprising:

attaching a patient-specific osteotomy guide to a corresponding surface of a tibia of a patient, the osteotomy guide configured during a preoperative plan for the patient to mate only in one position on the corresponding surface of the tibia;

drilling a guiding hole into the tibia through a drill hole of the osteotomy guide;

making an osteotomy at a patient-specific orientation through a resection slot of the osteotomy guide, the resection slot intersecting the drill hole and configured for the specific patient during the preoperative plan of the patient;

removing the osteotomy guide;

opening first and second faces of the osteotomy to form a first angle using a patient-specific osteotomy spreader; and

opening the osteotomy to form a second angle greater than the first angle using an osteotome stacked over the osteotomy spreader.

5. The osteotomy method of claim 4 , further comprising:

attaching an adjustable osteotomy securing device to span the osteotomy; and

securing the osteotomy at the second angle.

6. The osteotomy method of claim 5 , further comprising removing the osteotomy spreader and the osteotome; and

implanting a patient-specific osteotomy implant into the osteotomy, the patient-specific osteotomy implant configured with a wedge angle equal to the first angle, the first angle preoperatively determined for correcting a joint misalignment of the patient.

7. The osteotomy method of claim 6 , further comprising removing the osteotomy securing device.

8. The osteotomy method of claim 7 , further comprising bringing the first and second faces of the osteotomy from the second angle to the first angle.

9. The osteotomy method of claim 8 , further comprising attaching a fixation plate across the osteotomy.

10. The osteotomy method of claim 4 , further comprising drilling a stress-relief hole along an end of the osteotomy guided by the osteotomy guide.

11. An osteotomy method comprising:

attaching a patient-specific osteotomy guide to a corresponding surface of a tibia of a patient, the osteotomy guide configured during a preoperative plan for the patient to mate only in one position on the corresponding surface of the tibia;

drilling a guiding hole into the tibia through a drill hole of the osteotomy guide

making an osteotomy at a patient-specific orientation through a resection slot of the osteotomy guide, the resection slot intersecting the drill hole and configured for the specific patient during the preoperative plan of the patient;

removing the osteotomy guide;

opening first and second faces of the osteotomy to form a first angle using a patient-specific spreader; and

inserting a blade guard against a posterior bone surface of the tibia.

12. An osteotomy method comprising:

attaching a patient-specific osteotomy guide to a corresponding surface of a tibia of a patient, the osteotomy guide having a patient-specific three-dimensional engagement surface made preoperatively to conform as a negative surface of the corresponding surface of the tibia;

making an osteotomy at a patient-specific orientation through a resection slot of the osteotomy guide;

removing the osteotomy guide;

opening first and second faces of the osteotomy to form an implant insertion angle;

securing the first and second faces of the osteotomy at the implant-insertion angle;

implanting an osteotomy implant having a patient-specific wedge angle that is smaller than the implant-insertion angle; and

bringing the first and second faces of the osteotomy to the patient-specific wedge angle and in contact with the osteotomy implant.

13. The osteotomy method of claim 12 , further comprising attaching a fixation plate across the osteotomy.

14. The osteotomy method of claim 12 , further comprising drilling a stress-relief hole along an end of the osteotomy guided by the osteotomy guide.