ΚΡΙΤΗΡΙΑ ΙΞΩΔΟΕΛΑΣΤΙΚΗΣ ΣΥΖΕΥΞΗΣ ΜΑΚΡΩΝ ΟΣΤΩΝ ΚΑΙ ΟΣΤΙΚΟΥ ΤΣΙΜΕΝΤΟΥ

THE REPORTED FAILURE OF ENDOPROSTHESES, WHERE BONE CEMENT IS USED, IS A RESULT OF A SERIES OF INTERACTIONS BETWEEN BIOLOGICAL AND MECHANICAL FACTORS. A FACTORWHICH PLAYS A SIGNIFICANT ROLE IN THE DEVELOPMENT AND PROPAGATION OF MICROCRACKS, BETWEEN BONE AND BONE-CEMENT, IS THE UNSUITABLE MATCHING OF THEIR VISCOELASTIC PROPERTIES. IN THE PRESENT STUDY, THE VISCOELASTIC BEHAVIOUR OF FRESH LONG BONES IS EXAMINED, AND IT IS COMPARED TO THE RESPECTIVE BEHAVIOUR OF BONE-CEMENT. WITHIN THIS FRAMEWORK, THE STATIC AND THE CREEP BEHAVIOUR OF WHOLE FRESH SHEEP FEMOURS WERE DETERMINED. THE MEASUREMENTS WERE DONE WITH STRAIN GAUGES, AT THE TIME INTERVAL BETWEEN 10-2 - 10 3 SEC, AND FOR STRESS OF THE ORDER OF 10 MPA. BASED ON THESE MEASUREMENTS, STRESS ANALYSIS CARRIED OUT USING ISOTROPIC, TRANSVERSALLY ISOTROPIC AND ORTHOTROPIC MODEL. THROUGH THE USE OF A RHEOLOGICAL MODEL OF THREE PARAMETERS, THE CREEP COMPLIANCE AND THE REMAINING DEFORMATION WERE CALCULATED, AT TWO DIFFERENT POINTS OF THE FEMOUR AT WALKING SPEED OF 2.5 KM/H. TAKING INTO CONSIDERATION THESE, AS WELL AS DATA FROM THE LITERATURE, REFERRING TO THE VARIATION OF CREEP IN BONE-CEMENT, AS A FUNCTION OF THE FACTORS WHICH INTERFERE WITH ITS COMPOSITION, THE POSSIBILITY OF MATCHING BETWEEN BONE AND BONE-CEMENT IS EXAMINED.

Grantor dc:publisher

University of Patras

Year dc:date

1987

Authors dc:creator

• Bezerianos, Anastasios
• Μπεζεριάνος, Αναστάσιος

• Aseptic loosening
• CEMENTED ENDOPROSTHESIS
• Creep
• CREEP AND RECOVERY IN WALKING
• FEMORALBONE
• MATCHING BONE CEMENT AND BONE
• Strain gauges
• Stress analysis
• VISCOELASTIC MODELS
• Ανάλυση τάσεων
• ΕΝΔΟΠΡΟΘΕΣΕΙΣ ΜΕ ΟΣΤΙΚΟ ΤΣΙΜΕΝΤΟ
• ΕΡΠΥΣΜΟΣ ΚΑΙ ΕΠΑΝΑΤΑΞΗ ΣΤΗ ΒΑΔΙΣΗ
• ΕΡΠΥΣΜΟΣ ΠΑΡΑΜΟΡΦΩΣΗΣ
• ΗΛΕΚΤΡΙΚΑ ΠΑΡΑΜΟΡΦΩΣΙΜΕΤΡΑ
• ΙΞΟΔΟΕΛΑΣΤΙΚΑ ΜΟΝΤΕΛΑ
• Μηριαίο οστό
• ΜΗΧΑΝΙΚΗ ΧΑΛΑΡΩΣΗ ΕΝΔΟΠΡΟΘΕΣΕΩΝ
• ΣΥΖΕΥΞΗ ΟΣΤΙΚΟΥ ΤΣΙΜΕΝΤΟΥ ΟΣΤΟΥ
• Ιατρική και Επιστήμες Υγείας
• Κλινική Ιατρική
• Medical and Health Sciences
• Clinical Medicine

Language dc:language

gre

Identifier

10.12681/eadd/0487

OAI identifier oai:identifier

oai:10442/0487