Method of resecting bone

• US 5,228,459 A
• Filed: 10/09/1991
• Issued: 07/20/1993
• Est. Priority Date: 01/08/1990
• Status: Expired due to Term

• Current Assignee: Zimmer Technology Incorporated (Zimmer Biomet Holdings, Inc.)
• Original Assignee: James T. Treace, Jeffrey G. Roberts, Richard B. Caspari
• Inventors: Roberts, Jeffrey G., Caspari, Richard B., Treace, James T.
• Primary Examiner(s): Pellegrino, Stephen C.
• Assistant Examiner(s): DAWSON, GLENN K
• Application Number:
  US07/785,429
• Time in Patent Office: 650 Days
• Field of Search: 128/898, 623/18, 623/20, 606/53, 606/54, 606/79, 606/80, 606/86, 606/87, 606/88, 606/92-94, 606/96, 606/99, 606/102, 606/172, 606/180
• US Class Current: 128/898
• CPC Class Codes: A61B 17/15 Guides therefor arrangements for guiding straight saw blades in general B23D51/025
• CPC Class Codes: A61B 17/1615 Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
• CPC Class Codes: A61B 17/1624 Drive mechanisms therefor
• CPC Class Codes: A61B 17/1675 for the knee
• CPC Class Codes: A61B 17/1764 for the knee
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 17/7098 wherein the implant is permeable or has openings, e.g. fenestrated screw hollow surgical screws A61B17/864
• CPC Class Codes: A61B 17/8822 characterised by means facilitating expulsion of fluid from the introducer, e.g. a screw pump plunger, hydraulic force transmissions, application of vibrations or a vacuum
• CPC Class Codes: A61B 2017/00544 pneumatically
• CPC Class Codes: A61B 2017/1602 Mills
• CPC Class Codes: A61F 2/38 for elbows or knees
• CPC Class Codes: A61M 1/84 Drainage tubes; Aspiration tips for negative pressure wound therapy A61M1/90; for surgical cutting instruments A61B17/32
• CPC Class Codes: A61M 2205/103 rotating
• CPC Class Codes: Y10S 623/919 Bone
• CPC Class Codes: Y10T 407/1948 with cutting edge entirely across end of tool [e.g., router bit, end mill, etc.]

Abstract

Methods and apparatus for prosthetic knee replacement permit preparation of tibial plateau and femoral condyle surfaces and implant of tibial and femoral protheses components with the use of arthroscopic surgical techniques. The bone surfaces are resected by moving a rotating milling cutter longitudinally across the bone surface and moving the rotating milling cutter substantially laterally across the bone. Cement is supplied between the prostheses and the bone surfaces after positioning of the prostheses on the bone, and cement bonding is enhanced by applying suction to the bone to draw the cement into the bone.

Claims

1. A method of resecting a bone surface in the body comprising the steps of:

moving a rotating milling cutter longitudinally across the bone surface, said longitudinally moving rotating milling cutter cutting said bone surface along the length of the longitudinally moving milling cutter; and

moving a rotating milling cutter substantially laterally across said bone surface, said laterally moving rotating milling cutter cutting said bone surface along the length of the laterally moving milling cutter;

whereby said bone surface is made planar.

2. A method of resecting a bone surface as recited in claim 1 wherein said step of laterally moving a milling cutter includes pivoting the milling cutter.

3. A method of resecting a bone surface as recited in claim 1 wherein said step of longitudinally moving a milling cutter includes longitudinally moving the milling cutter across the bone surface a plurality of times to form a plurality of spaced troughs.

4. A method of resecting a bone surface in the body comprising the steps of

forming a plurality of elongate troughs in the bone surface with ridges therebetween;

and

removing the ridges to produce a planar bone surface.

5. A method of resecting bone as recited in claim 4 wherein the troughs have lengths and said step of removing the ridges includes moving a milling cutter substantially laterally with respect to the lengths of the troughs.

6. A method of resecting a bone surface in the body as recited in claim 4 wherein said step of removing the ridges includes pivotally moving a milling cutter to sweep the milling cutter across the ridges.

7. A method of resecting a bone surface in the body as recited in claim 6 wherein said trough forming step includes moving a milling cutter longitudinally across the bone surface.

8. A method of resecting a bone surface in the body as recited in claim 4 wherein said trough forming step includes moving a milling cutter longitudinally across the bone surface.

9. A method of resecting a bone surface in the body comprising the steps of

moving a rotating milling cutter longitudinally across the bone surface a plurality of times to form a plurality of spaced troughs, said step of longitudinally moving the milling cutter including pivoting the milling cutter to cause the spaced troughs to be angularly oriented relative to each other;

and

moving a rotating milling cutter substantially laterally across said bone surface, said step of laterally moving the milling cutter including pivoting the milling cutter.

10. A method of resecting a bone surface as recited in claim 9 wherein said step of laterally moving a milling cutter includes pivoting the milling cutter to sweep the milling cutter across the spaced troughs to level said bone surface.