Patellar resection sawguide

Details Patellar resection sawguide Patellar resection sawguide

1985-05-30

1987-01-06

Peshock, Robert

Surgery

Truss

Perineal

128 92VZ, A61E 504

Patent

active

046338624

ABSTRACT:
Disclosed herein are a method and instruments for the installation of a patellar button prosthesis. The first instrument consists of a saw guide including gauges integrally attached thereto which aid the surgeon in determining whether the patella has been grasped at the correct location with respect to the anterior and posterior sides thereof, which determine for the surgeon whether adequate bone stock will remain after resection of the patella, and which are chosen to correspond with the particular thickness of the patellar button which is to be installed. The second instrument consists of a drill guide including structure enabling its attachment to one of the jaws of the saw guide so that the saw guide may be retained in position about the patella after resection. A further instrument usable with the present invention consists of a drill bit including a collar which is provided to interact with holes formed in the drill guide so as to limit the depth of the holes which are drilled in the patella for the purpose of installation of the patellar button. Finally, a patella clamp is provided which includes a single moveable jaw limited in its movement solely to reciprocation, which clamp is utilized to install the patellar button onto the resected patella. The disclosed method involves the use of the above described instruments for the purpose of installation of a patellar button prosthesis.

REFERENCES:
patent: 4565192 (1986-01-01), Shapiro
Zimmer, Warsaw, Ind., "Eftekhar.TM. II Knee Prosthesis", pub. B-281 5M 281, 1980.
Howmedica, Rutherford, N.J., "Total Condylar Knee Prosthesis Surgical Technique", C. S. Ranawat, 1978, pub. ST2010-12/79 10MB.
Richards, Memphis, Tenn. "R.C.M..RTM. Total Knee System", R. S. Laskin, 1983, pub. 4997.

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