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Biomechanical Testing

Clinical research has shown that an early secure fixation of a prosthesis is prognostic for the life span of the prosthesis. One of the purposes of experimental implant research is to examine the effect of different treatments on the fixation of implants. By finding an optimal fixation of a prosthesis the life span can be prolonged. The result of this may be that the patient does not need a replacement of his prosthesis and with this avoid surgery.

The fixation of an implant can, among others, be evaluated by the use of a biomechanical push-out test. In order to execute a biomechanical push-out test you need to make a bone block containing an implant (See ”Hard tissue preparation”). The push-out test is made by pushing the implant out of the bone block with a constant velocity while the power with which the implant is pushed out of the bone block, is registered. From the registered values it is possible to draw a force displacement curve. This curve makes it possible to calculate parameters that give us information about the biomechanical fixation of the implant. 

At the Orthopaedic Research Lab, biomechanical push-out tests are performed by a MTS Bionics Test Machine.

 
Push-out Machine

MTS System Corpotarion
14000 Technology Drive
Eden Prairie, MN, USA

www.mts.com

 
Kalender

Publikationer
Oxford consensus on primary cam morphology and femoroacetabular impingement syndrome: part 1-definitions, terminology, taxonomy and imaging outcomes
Dijkstra HP, Mc Auliffe S, Ardern CL, Kemp JL, Mosler AB, Price A, Blazey P, Richards D, Farooq A, Serner A, McNally E, Mascarenhas V, Willy RW, Oke JL, Khan KM, Glyn-Jones S, Clarke M, Greenhalgh T, Agricola R, Andersen TE, Ayeni O, Beasley I, Bizzini M, Cardinale M, Chiokwindo T, de Villiers R, Engebretsen L, Entwisle T, Ergen E, Fernquest S, Geertsema C, Gimpel M, Haddad F, Hanff D, Heerey J, Holmich P, Impellizzeri FM, Jacobsen JS, van Rensburg CJ, Kassarjian CJ, Khanduja V, Kliethermes S, Lewis C, Maak T, Mayes S, Mechlenburg I, Mkumbuzi N, Nelis S, Palmer A, Papadopoulou T, Philippon M, Pierpoint L, Plass L, Pollock N, Reiman M, Roberts N, Rommers N, Sawaya N, Snoxell T, Souza J, Strickland L, Taseska T, Thorborg T, Thornton J, Tol J, Trease L, van Klij P, Volcke P, Weir A, Wilson F, Yamauchi Y
Risk stratification for post-operative pulmonary complications following major cardiothoracic or abdominal surgery: Validation of the PPC Risk Prediction Score for physiotherapist's clinical decision-making.
Salling SL, Jensen JH, Mosegaard SB, Sørensen L, Mechlenburg I.
Whole exome sequencing of 28 families of Danish descent reveals novel candidate genes and pathways in developmental dysplasia of the hip.
Dembic M, van Brakel Andersen L, Larsen MJ, Mechlenburg I, Søballe K, Hertz JM.
 Ortopædkirurgisk Forskning Aarhus Universitetshospital Palle Juul-Jensens Boulevard 99 Indgang J 8200 Aarhus N Tel: +45 7846 7471 
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