REDUCTION OF THE DEVELOPMENT OF STRIPE WEAR ON INSERTS FOR HIP JOINT PROSTHESES BY MODIFYING THE GEOMETRY OF THE TRANSITION BETWEEN THE FACE AND SPHERICAL RECESS

REDUCTION OF THE DEVELOPMENT OF STRIPE WEAR ON INSERTS FOR HIP JOINT PROSTHESES BY MODIFYING THE GEOMETRY OF THE TRANSITION BETWEEN THE FACE AND SPHERICAL RECESS

A socket insert of a hip joint prosthesis having a spherical-indentation-shaped recess in which a spherical head of a femur is mounted. The spherical indentation has a run-in zone which ends on one side with a circular arc tangentially in an end face of the socket insert and extends on another side...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: PREUSS, ROMAN, PANDORF, THOMAS
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BANDAGES, DRESSINGS OR ABSORBENT PADS
DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS
FILTERS IMPLANTABLE INTO BLOOD VESSELS
FIRST-AID KITS
FOMENTATION
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES
PROSTHESES
TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:A socket insert of a hip joint prosthesis having a spherical-indentation-shaped recess in which a spherical head of a femur is mounted. The spherical indentation has a run-in zone which ends on one side with a circular arc tangentially in an end face of the socket insert and extends on another side as far as the run-in edge. Between a start of the circular arc with a radius of the length (RE) and the run-in edge of the spherical indentation with the radius of the length (RK) the run-in zone forms a curve, the function of which is continuously differentiated twice at every point.