Method and apparatus for resecting bone from an ulna in preparation for prosthetic implantation
First Claim
1. A bone resection guide for an ulna comprising:
- a frame;
a guide block adjustably carried by said frame and operative to contact an olecrannon of an ulna of a patient; and
a mock trochlea holder adjustably carried by said frame and operative to temporarily retain a selected mock trochlea in a trochlear notch of the ulna of the patient, wherein said guide block comprises;
(i) a guide stem adjustabty coupled to said frame; and
(ii) a guide block coupled to an end of said guide stem.
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Accused Products
Abstract
A bone resection guide, particularly for an ulna, utilizes anatomical reference points of the ulna to establish an optimal position for a prosthesis. The bone resection guide provides a guiding instrument that allows a surgeon to remove only bone that needs to be removed for precise placement of the end prosthesis. A method of resecting bone from the ulna in preparation of prosthetic implantation using the bone resection guide matches an elbow axis finder with a particular size of an ulna fossa of the patient. Once matched, a sized resection template, directly related to the shape of the prosthesis, is used as a resection guide. Incorporated into the bone resection guide are known anthropometric qualities when providing resection surfaces. This enhances the probable position of the implant.
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Citations
27 Claims
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1. A bone resection guide for an ulna comprising:
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a frame;
a guide block adjustably carried by said frame and operative to contact an olecrannon of an ulna of a patient; and
a mock trochlea holder adjustably carried by said frame and operative to temporarily retain a selected mock trochlea in a trochlear notch of the ulna of the patient, wherein said guide block comprises;
(i) a guide stem adjustabty coupled to said frame; and
(ii) a guide block coupled to an end of said guide stem. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of preparing an ulna for prosthetic implantation comprising the steps of:
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determining a reference axis of natural elbow rotation of an elbow of a patient with respect to an ulna of the elbow, said determining step including (i) placing a selected mock trochlea into a trochlear notch of an ulna of a patient, and (ii) temporarily fixing the mock trochlea within the trochlear notch of the ulna;
selecting a template having a plurality of resection guide surfaces from one of a plurality of templates having various dimensions and resection guide surfaces;
situating the selected template adjacent the ulna and with respect to the determined reference axis; and
resecting a portion of the ulna according to the resection guide surfaces while the selected mock trochlea is fixed within the trochlear notch of the ulna of the patient. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method of preparing a bone for prosthetic implantation comprising the steps of:
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placing a selected mock trochlea into a trochlear notch of an ulna of a patient;
temporarily fixing the mock trochlea in the trochlear notch;
placing a selected resection template onto the mock trochlea; and
resecting bone from the ulna according to the resection template. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification