Antirotational hip screw

Details Antirotational hip screw Antirotational hip screw

1984-07-25

1987-04-14

Mancene, Gene

Surgery

Truss

Perineal

128 92YT, A61F 504

Patent

active

046570012

ABSTRACT:
An implantable compression hip screw is disclosed. A unique antirotational/locking device used in combination with axially aligned grooves in a barrel plate and a lag screw prevents the fractured portion of the femur from rotating during the postoperative period. The antirotational/locking device comprises elongated rods which fit within the aligned grooves and thereby allow sliding of the lag screw relative to the barrel plate during the postoperative period.

REFERENCES:
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patent: 2327434 (1943-08-01), Johnston
patent: 2702543 (1955-02-01), Pugh et al.
patent: 3002514 (1961-10-01), Deyerle
patent: 3374786 (1968-03-01), Callender, Jr.
patent: 3530854 (1970-09-01), Kearney
patent: 3892233 (1975-07-01), Vestby
patent: 4432358 (1984-02-01), Fixel
patent: 4441492 (1984-04-01), Rydell et al.
patent: 4530355 (1985-07-01), Griggs
Machinery's Handbook, 20th ed. 1978, pp. 1274-1277, a portion of "Screw Thread Systems".
"Richard's Offers the Solution", brochure by Richards Manufacturing Co. Inc., 1450 Brooks Rd., Memphis, Tenn. 38116.
"Biomet Concentric Hex", brochure by Biomet Inc., P.O. Box 587, Warsaw, Ind. 46580.
"Wright Hip Compression Screw/Plate", by Wright, P.O. Box 100, Arlington, Tenn. 38002.

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