Method of implanting extramedullary femoral head-neck prosthesis

Details Method of implanting extramedullary femoral head-neck prosthesis Method of implanting extramedullary femoral head-neck prosthesis

1989-12-20

1991-03-12

Isabella, David J.

Surgery

Instruments

Orthopedic instrumentation

623 66, 623 18, A61F 504, A61F 230

Patent

active

049989375

ABSTRACT:
A method for implanting an extramedullary femoral head-neck prosthesis in the femur, the latter having a shaft and a neck at the upper end of the shaft at the medial side of the femur, includes determining the axis of the medial trabecular stream, cutting the neck of the femur to form a seat on the femur neck, and drilling a bore through the shaft of the femur to extend from the neck of the femur down to the lateral side of the shaft along a line substantially parallel to the axis of the medial trabecular stream. A barrel having an open end is inserted into the bore with the open end of the barrel facing upwardly and secured in fixed position in the bore. A stem of a ball assembly is inserted coaxially into the barrel to bring a generally planar surface of the ball assembly into congruent, face-to-face engagement with the planar surface of the femur neck.

REFERENCES:
patent: 2781758 (1957-02-01), Chevalier
patent: 2785673 (1957-03-01), Anderson
patent: 4129903 (1978-12-01), Huggler
patent: 4187559 (1980-02-01), Grell et al.
patent: 4530114 (1985-06-01), Tepic
patent: 4791919 (1988-12-01), Elloy et al.
Howmedica, Inc., "The PCA.TM. Total Hip System", 1984, pp. 1-7.
Huggler et al., "The Uncemented Thrust-Plate Hip Prosthesis", The Cementless Fixation of Hip Endoprostheses, E. Morscher (ed.), 1984, Springer-Verlag, Berlin, pp. 125-132.
Schreiber et al., "First Results with the Thrust Plate Total Hip Prosthesis", pp. 130-132.
Huggler et al., "A New Approach Towards Hip-Prosthesis Design", Arch Orthop Traumat Surg., 97, (1980), pp. 141-144.

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