Surgery – Instruments – Orthopedic instrumentation
Patent
1994-11-18
1997-10-07
Buiz, Michael
Surgery
Instruments
Orthopedic instrumentation
606 86, 606 89, 606 72, A61B 1758
Patent
active
056742240
ABSTRACT:
An apparatus and a method for providing initial mechanical fixation of a hamstring graft and subsequent biologic bonding of the graft to the walls of a femoral tunnel. The apparatus includes a two-part screw assembly that is introduced through the lateral femoral condyle. The two-part screw assembly includes an outer screw and an inner screw. The outer screw includes a threaded body and an outwardly-extending nose portion that is of a diameter reduced from the threaded body. The nose portion provides a mechanical fixation point by functioning as a post within the femoral tunnel. A hamstring graft is looped around this post, mechanically fixing one end of the graft. Bone reamings, or mulch, is inserted using a bone graft impactor tool through a hollow throughbore axially defined within the body of the outer screw. The throughbore is in communication with an opening adjacent the nose portion and the mulch is deposited into the femoral tunnel around the tendon loop. The inner screw is inserted into the throughbore.
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"Ligament Screw System" (.COPYRGT.1992 Arthrotek, Inc.).
Howell Stephen M.
Wiley Roy Carl
Buiz Michael
Leonardo Mark S.
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