Zimmer Gmbh

Other

Nemco Medical, Ltd.

Smucker, Donald M.

Richard R Van Zile

Donald M Smucker

Thomas M Coon

Alfred J Tria, Jr

E Marlowe Goble

Daniel F Justin

Robert A Hodorek

Toby N Farling

Warren Scott Gareiss

Alfred J Tria Jr

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 method and apparatus for resectioning a patella without everting it includes a resection guide which grips the patella with gripping members, one of which can also function as an alignment guide for a surgeon using a saw for the resectioning. A sizing/alignment guide engageable with the resection guide is provided for aligning drills and/or reamers used in resectioning. Under one embodiment, a pair of reamers are provided for reaming the patella in two reaming operations.

Patella resection guide

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

A femoral knee saw guide for use in surgery includes a cutting guide having a slot extending therethrough for guiding a saw and alignment structure attached to the guide and positioned externally of the patient's femur for effecting proper alignment of the cutting guide. The cutting guide may be used for cutting one or both condyles at the distal end of the femur in a medial to lateral direction or lateral to medial direction. An arm having a stylus extending into the plane defined by the path of travel of the saw may be used when it is desired to cut only a single condyle to prevent inadvertently cutting the opposing condyle.

Femoral knee saw guide and method

Growing community of inventors

Bryan, OH, United States of America

Richard R Van Zile