Zimmer Gmbh

Other

Mis-tka Group, LLC

Smucker, Donald M.

Alfred J Tria, Jr

Donald M Smucker

Thomas M Coon

Richard R Van Zile

E Marlowe Goble

Daniel F Justin

Robert A Hodorek

Toby N Farling

Warren Scott Gareiss

Thoms M Coon

A knee arthroplasty prosthesis includes a femoral component having multiple pieces with engagement means provided for engaging various pieces of the femoral component to one another following their insertion in the incised area of the femur. A tibial component includes multiple pieces designed for assembly following positioning in the incision. The tibial component includes a Morse taper cavity on one piece of the tibial component and a Morse taper extension on another member of the component for receipt therein.

Knee arthroplasty prosthesis

The present invention comprises a set of instruments and a method for their use in preparing a knee joint to receive knee implants. The inventive instruments and method are generally suitable for knee joint surgery. Furthermore, they include features that make them suitable for performing a minimally invasive knee surgery in which a smaller than normal incision is made and oriented to preserve the quadriceps mechanism and protect the suprapatellar pouch. The instruments permit switching from a minimally invasive technique to a standard open technique at any point in the procedure. An illustrative set of instruments for total knee arthroplasty and an associated minimally invasive technique are described.

Apparatus for knee surgery and method of use

Knee arthroplasty prosthesis method

A femoral impactor-extractor and method includes a body having an elongated passageway extending from a proximal end to a distal end, an elongated post positioned in such passageway for longitudinal movement therein and extending from a threaded proximal end to a distal end having an enlarged flange with a greater length than breadth. The proximal end of the elongated post is threaded and threadedly engaged to a rotatable handle. Rotation of the handle moves the elongated post and its flange in a proximal direction to clamp the femoral knee prosthesis between the ends of the flange and contoured surfaces which engage the articulating surfaces of the respective condylar portions of the prosthesis.

Femoral impactor-extractor

A method and apparatus for performing total knee arthroplasty which is minimally invasive includes components with guide surfaces and slots for controlling the path of a cutting saw. The instrumentation permits resection of the proximal end of the tibia and distal end of the femur to be performed either medially or laterally with minimal cutting of soft tissue.

Minimally invasive total knee arthroplasty method and instrumentation

Growing community of inventors

Princeton, NJ, United States of America

Alfred J Tria, Jr