Patient-specific partial knee guides and other instruments
First Claim
Patent Images
1. A surgical kit 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 vertical resection channel having a variable width preoperatively configured for guiding a vertical resection through the proximal portion of the tibial bone, wherein the vertical resection channel is formed between first and second curved surfaces of corresponding first and second flanges of the tibial guide, wherein the first and second curved surfaces are piecewise convex towards one another in at least one of a coronal plane relative to the patient or an axial plane relative to the patient.
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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.
1113 Citations
19 Claims
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1. A surgical kit 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 vertical resection channel having a variable width preoperatively configured for guiding a vertical resection through the proximal portion of the tibial bone, wherein the vertical resection channel is formed between first and second curved surfaces of corresponding first and second flanges of the tibial guide, wherein the first and second curved surfaces are piecewise convex towards one another in at least one of a coronal plane relative to the patient or an axial plane relative to the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A surgical kit for a unicompartmental knee arthroplasty, comprising:
a patient-specific tibial guide having, a patient-specific body portion having a proximal portion and an anterior portion configured to nestingly conform and mate with a proximal portion and an anterior portion of a tibial bone of a specific patient, respectively, and a drill/resection block coupled to the patient-specific body having a drill guide portion configured for drilling first and second anterior holes into the tibial bone and a resection guide portion defining a vertical resection channel for guiding a vertical resection into the tibial bone, wherein the vertical resection channel is formed between first and second curved surfaces of corresponding first and second flanges of the tibial guide, wherein the first and second curved surfaces are piecewise convex towards one another in at least one of a coronal plane relative to the patient or an axial plane relative to the patient. - View Dependent Claims (15, 16)
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17. A surgical kit for a unicompartmental knee arthroplasty, comprising:
a patient-specific tibial guide having a patient-specific body with an inner surface preoperatively configured to nestingly conform and mate in only one position with a tibial bone of a specific patient, the tibial guide including first and second flanges defining a vertical resection channel having a variable width preoperatively configured for guiding a vertical resection through a proximal portion of the tibial bone, wherein the vertical resection channel is formed between first and second curved surfaces of corresponding first and second flanges of the tibial guide, wherein the first and second curved surfaces are piecewise convex towards one another in at least one of a coronal plane relative to the patient or an axial plane relative to the patient.
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18. A surgical kit for a unicompartmental knee arthroplasty, comprising:
a patient-specific tibial guide having a patient-specific body with an inner surface preoperatively configured to nestingly conform and mate in only one position with a proximal portion of a tibial bone of a specific patient, the tibial guide having first and second flanges defining a vertical resection channel that ends in a safety hole formed between the first and second flanges, wherein the safety hole is configured to receive a stop pin limiting a depth of a vertical resection, wherein the first and second flanges of the tibial guide are formed as first and second curved surfaces, wherein the first and second curved surfaces are piecewise convex towards one another in at least one of a coronal plane relative to the patient or an axial plane relative to the patient. - View Dependent Claims (19)
Specification