Prosthetic fixation technique

• Main Authors: MALCOM; LAWRENCE L, CONVERY; F. RICHARD
• Format: Patent
• Language: English
• Published: 23.06.1981
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; DIAGNOSIS; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PROSTHESES; SURGERY; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS; TREATMENT OR PROTECTION OF EYES OR EARS

In order to reduce the incidence of artificial joint failure at the interface where the prosthesis is bonded to the bone by cement, the artificial prosthesis is provided with openings, and is clamped in place to provide a peripheral seal around the end of the bone to which it is being secured. Then the cement is applied through the prosthesis under pressure, and the pressure is maintained until the cement hardens. The prosthesis may be provided with both input and output openings so that, as the cement is forced into the space between the prosthesis and the cortical bone structure, material including blood and marrow contents will be forced out the exit apertures and the pressurized cement will thereafter make good direct contact with both the bone and the prosthesis, to insure a lasting bond. The rim of the prosthesis and the matching bone surfaces may be specially prepared to provide a good pressure tight seal.