Patient-specific partial knee guides and other instruments
First Claim
Patent Images
1. A surgical system for unicompartmental knee arthroplasty comprising:
- a patient-specific unicompartmental tibial guide having a patient-specific body with an inner surface preoperatively configured to nestingly conform and mate in only one position with an anterior portion and a proximal portion of a tibial bone of a specific patient, the tibial guide including a proximal-distal resection channel having a first width formed between first and second flanges of the tibial guide, the proximal-distal resection channel being open in a proximal-distal direction; and
a cutting insert having a first plate receivable in the proximal-distal resection channel to occupy a portion of the first width of the resection channel to form a second width smaller than the first width.
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Abstract
A patient-specific unicompartmental tibial guide has a patient-specific body with an inner surface. The inner surface is preoperatively configured to nestingly conform and mate in only one position with an anterior portion and a proximal portion of a tibial bone of a specific patient. The tibial guide includes a vertical resection channel having a variable width preoperatively configured for guiding a vertical resection through the proximal portion of the tibial bone.
1101 Citations
20 Claims
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1. A surgical system for unicompartmental knee arthroplasty comprising:
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a patient-specific unicompartmental tibial guide having a patient-specific body with an inner surface preoperatively configured to nestingly conform and mate in only one position with an anterior portion and a proximal portion of a tibial bone of a specific patient, the tibial guide including a proximal-distal resection channel having a first width formed between first and second flanges of the tibial guide, the proximal-distal resection channel being open in a proximal-distal direction; and a cutting insert having a first plate receivable in the proximal-distal resection channel to occupy a portion of the first width of the resection channel to form a second width smaller than the first width. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A surgical system for a unicompartmental knee arthroplasty, comprising:
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a patient-specific unicompartmental tibial guide having a patient-specific body with an inner surface preoperatively configured to nestingly conform and mate in only one position with at least an anterior portion of a tibial bone of a specific patient, the tibial guide including a vertical resection channel having a first width formed between first and second flanges of the tibial guide, the first and second flanges being joined at a posterior end of the vertical resection channel to form a stop surface; and a plurality of cutting inserts, each cutting insert having a first plate receivable in the vertical resection channel and configured to occupy a portion of the first width of the resection channel to form a second width smaller than the first width, wherein each plate has a different thickness to provide a plurality of different second widths. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A surgical system for a unicompartmental knee arthroplasty, comprising:
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a patient-specific unicompartmental tibial guide having a patient-specific body with an inner surface configured to nestingly conform to an anterior portion and a proximal portion of a tibial bone of a specific patient, the tibial guide further including a drill/resection block coupled to the patient-specific body, the drill/resection block defining a vertical resection channel having a first width formed between first and second flanges and defining at least one bore configured for use in drilling at least one hole into the tibial bone; and a removable cutting insert having a plate receivable in the vertical resection channel to produce a cutting slot between the cutting insert and the tibial guide and configured to occupy a portion of the first width of the resection channel to form a second width smaller than the first width. - View Dependent Claims (20)
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Specification