Patient-specific osteotomy devices and methods

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.

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.

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.