1
Robert V Kenna: Spinal implant. Pfizer Hospital Products Group, Peter C Richardson, Lawrence C Akers, Mark Dryer, December 22, 1987: US04714469 (562 worldwide citation)

A spinal implant adapted to replace a disc between adjacent vertebrae having a predetermined thickness and profile chosen to match the space between said vertebrae and characterized by elongated protuberances adapted to be located in grooves drilled in said vertebrae and a porous coating on at least ...


2
Robert V Kenna: Anterior cruciate ligament prosthesis. Pfizer Hospital Products Group, Peter C Richardson, Lawrence C Akers, Elizabeth O Slade, May 9, 1989: US04828562 (259 worldwide citation)

An adjustable housing suitable to be used with another housing and with a synthetic ligament so as to provide (for example) an anterior cruciate ligament prosthesis system for a knee joint is provided. The adjustable housing features an interior having a step shoulder located therein. A set screw in ...


3
Robert V Kenna: Method and apparatus for arthroscopic knee surgery. Applied Biological Concepts, Fulwider Patton Lee & Utecht, June 14, 1994: US05320115 (218 worldwide citation)

A surgical method for arthroscopic repair or replacement of the anterior cruciate ligament is disclosed. A preferred embodiment of the method generally includes forming osseous tunnels in the tibia and femur, opening into the intercondylar region. A patellar tendon graft is harvested from the knee, ...


4
Robert V Kenna: Method and instrumentation for the replacement of a knee prosthesis. Pfizer Hospital Products Group, Peter C Richardson, Lawrence C Akers, Raymond W Augustin, August 6, 1991: US05037423 (170 worldwide citation)

A novel method for replacing a previously implanted knee joint prosthesis in a patient is disclosed in which the previously implanted femoral component is replaced with a revision femoral component having thicker distal and posterior bearing portions so as to restore the natural anatomic transverse ...


5
Robert V Kenna: Acetabulum sizer and drill guide. Howmedica, Charles J Knuth, Peter C Richardson, Harold W Ordway, July 16, 1985: US04528980 (156 worldwide citation)

An acetabulum sizer and drill guide for use in implanting an acetabular cup prosthesis comprises a substantially hemispherical shell having an outside surface that generally conforms to the outside surface of the prosthesis to be fitted into a prepared acetabulum. Viewing ports in the shell enable v ...


6
Robert V Kenna: Prosthetic knee implantation. Howmedica, Connolly & Hutz, November 29, 1988: US04787383 (149 worldwide citation)

A prosthetic knee is implanted after cutting the femor and tibia in the proper manner with the aid of instruments which include axial alignment guides and a series of cutting jigs.


7
Robert V Kenna: Self-locking joint connector. Pfizer Hospital Products Group, Peter C Richardson, Lawrence C Akers, Elizabeth O Slade, September 29, 1992: US05151104 (121 worldwide citation)

A device suitable for use in a wide variety of types of joints of the body of a human or other mammal is provided. The device is especially useful for implantation into the human femur so as to repair an anterior cruciate ligament. The device is self-locking and can be used to connect two parts of a ...


8
Robert V Kenna: Guide for femoral neck osteotomy. Pfizer Hospital Products Group, Charles J Knuth, Peter C Richardson, Harold W Ordway, November 11, 1986: US04621630 (117 worldwide citation)

A guide for femoral neck osteotomy comprises a longitudinal rod having attaching structure at the lower end thereof for securing the rod to a femur at the greater trochanter. A transversely extending support arm is secured to the rod adjacent the lower end thereof, and a guide bar is connected to th ...


9
Robert V Kenna: Prosthetic knee implantation. Howmedica, Connolly & Hutz, May 2, 1989: US04825857 (116 worldwide citation)

A tool for use in preparing a distal femur for the implantation of a prosthetic knee includes a central section having at least one handle. A positioning pin extends outwardly from the central section. A distal femoral condyles cutting jig is selectively connected to the central section.


10
Robert V Kenna, David S Hungerford, Kenneth A Krackow: Prosthetic knee implantation. Howmedica, Harold Pezzner, March 3, 1987: US04646729 (113 worldwide citation)

A prosthetic knee is implanted after cutting the femor and tibia in the proper manner with the aid of instruments which include axial alignment guides and a series of cutting jigs.