1
Robert C Cohen, Robert G Averill: Vertebral body prosthetic implant with slidably positionable stabilizing member. Implex Corporation, Arthur L Plevy, August 22, 1995: US05443515 (222 worldwide citation)

A spinal stabilization device positionable between neighboring vertebral bodies to provide rigid internal fixation thereof and thus stabilize a spinal column which has been rendered unstable by disease or injury. The device includes a vertebral body prosthesis dimensioned to act as a replacement for ...


2
Robert G Averill, Christopher G Sidebotham: Method and apparatus for implanting a prosthetic device. Osteonics, Samuelson & Jacob, January 19, 1988: US04719908 (128 worldwide citation)

Method and apparatus for preparing the bone at a joint for the implant of a component part of a prosthetic device include a contouring guide placed on the bone at a predetermined site and having a guide rail for delineating a path of travel to which a contouring cutter is confined while translated a ...


3
Robert G Averill, Alex Khowaylo, Christopher G Sidebotham: Knee prosthesis with accommodation for angular misalignment. Osteonics, Samuelson & Jacob, December 22, 1987: US04714472 (104 worldwide citation)

A knee prosthesis in which articular surface areas of the engaged femoral and tibial components of the prosthesis include surface profile contours lying in a common arcuate profile defined by a medial-lateral radius having an origin lying on the mechanical axis passing through the femoral head of th ...


4
Robert C Cohen, Robert G Averill, Scott V Cron: Prosthetic knee tibial component with axially ribbed keel and apparatus for effecting implant. Osteonics, Samuelson & Jacob, October 18, 1994: US05356414 (95 worldwide citation)

A tibial component of a prosthetic knee implant has a tibial tray, a post extending axially downwardly from a generally laterally central location beneath the tibial tray, and a keel including flanges extending laterally outwardly from the post and making an angle with one another so as to be direct ...


5
Robert C Cohen, Robert G Averill, Scott V Cron: Prosthetic knee tibial component with axially ribbed keel and apparatus for effecting implant. Osteonics, Samuelson & Jacob, February 1, 1994: US05282866 (74 worldwide citation)

A tibial component of a prosthetic knee implant has a tibial tray, a post extending axially downwardly from a generally laterally central location beneath the tibial tray, and a keel including flanges extending laterally outwardly from the post and making an angle with one another so as to be direct ...


6
Robert G Averill, Alfred J Zarnowski, Matthew V Lyons: Femoral stem surgical instrument system. Osteonics, Samuelson & Jacob, April 24, 1990: US04919679 (72 worldwide citation)

A femoral stem surgical instrument system includes a handle component and an impact component, either one of which is selectively coupled with a femoral stem through a recess in the femoral stem, the recess providing separate facilities for the appropriate coupling of either of the components with t ...


7
Robert G Averill, Robert C Cohen, Rafail Zubok: Prosthetic device. Implex Corporation, Plevy & Associates, December 30, 1997: US05702487 (71 worldwide citation)

A hip prosthesis for implanting into the medullary canal of a femur, which comprises a stem for implanting into the canal of the femur, the stem having a proximal end and a distal end, the stem also including a proximal locking zone substantially adjacent the proximal end, the proximal locking zone ...


8
Robert G Averill: Femoral prosthesis with selectively removable collar. Osteonics, Samuelson & Jacob, September 13, 1988: US04770660 (68 worldwide citation)

A stem-type femoral prosthesis has a calcar collar selectively installed on the stem of the prosthesis or removed from the stem interoperatively by sliding the collar in transverse directions between the medial and lateral sides of the stem, at the proximal end of the stem, to facilitate seating of ...


9
Robert G Averill, Robert C Cohen: Prosthetic ellipsoidal acetabular cup. Implex Corporation, Arthur L Plevy, August 22, 1995: US05443519 (60 worldwide citation)

An acetabular cup prosthetic device comprised of an outer shell component and a inner bearing insert and the method of implanting the acetabular cup prosthetic within a patient. The outer surface of the shell component for the present invention acetabular cup has a plurality of regions which conform ...


10
Robert G Averill, Robert C Cohen: Prosthetic implant procedure and femoral broach therefor. Osteonics, Samuelson & Jacob, February 18, 1992: US05089004 (58 worldwide citation)

A procedure for contouring the wall of a femoral cavity in a femur for the reception of a femoral stem to be seated within the femoral cavity employs a femoral broach which includes cutting teeth aligned along peripherally spaced apart longitudinal rows extending along a portion of the outer surface ...