Issue 15

D. 8 and Fro rep Nu Th and ace 20 A s des ma sim em tru dir Hy the of tetr sep con En to dep hem mo Ma Tra UH ma Kytyr et alii, Fra absolute tem ad iso E E  m the set of orted elastic merical analy e primary pu comparison tabular cup a loadsteps asc olid model w igned comp nufacturer (B plied to incl bossing the c e geometry a ections. Final perMesh (Al STEP forma the thin geom ahedral elem arately using taining noda gineering sim be quasistatic icted i n Fig. ishere of th re accurate f terial propert becular bon MWPE (IS nufacturers. ttura ed Integrit perature T: 2 1 a ET C    samples the moduli and w sis rpose of the with its be nd the ceme ertained stre as created in onents. The eznoska s.r. ude the sphe up to the he s a cylindric assembly (pa tair Engineer t is defined etry and sm ents shown the same co l coordinates ulation softw divided in 2 6. Surface-to e cup was m orce transmis ies are descri e material p O 5834 -2) à Strutturale, 15 d p value of elas as used in n Figur numerical an havior durin nt mantle im ss field distrib parametric geometry o.). Inner di rical head ( ⊘ misphere. T al socket. Th rts and cons ing, Inc.) fin by areas, ther all radius of in Fig. 5 was ordinate syst and element are Ansys (A 0 loadsteps. -surface con eshed by con sion to the p bed in Tab. 1 roperties w and the b (2011) 5-13; D tic modulus umerical anal e 4 : Ultrasoni alysis was th g the loadin planted in a s ution at the modeller Inv of the aceta ameter was 3 D = 32 m he thickness e implant w trains) was ex ite element p efore the sur the cement generated w em. HyperM conectivity. NSYS, Inc.) Loading for tact was defi tact element elvis. Frictio . All materia ere obtained one-cement OI : 10.3221/IGF (E = 853 ± ysis. c measuremen e assessment g tests. Det mall bone bl bone-cement entor (Auto bular impla 2 mm, oute m) and the c of this layer as surrounde ported in th re-processor face was disc mantle quadr ith respect to esh native fo was used fo ce value and ned between s to model f n between th ls were consi by ultraso Palacos R -ESIS.15.01 72 MPa) was t of elastic mo of the degra ailed three-d ock was deve interface du desk, Inc.). T nt was obta r 49 mm. Th ylindrical ne was 3 mm. d with minim e STEP form was used fo retized by qu atic elements surface me rmat was con r the numeri direction of head and ac emoro-acetab e femoral he dered as isotr nic measurem (Heraeus M obtained. T dulus. dation of ace imensional f loped. The a ring gait cycl he model w ined from e geometry ck. The cem The bone wa ally 15 mm at. r model dis adratic trian were chose sh. Each com verted to An cal analysis. T downstair w etabular com ular interfac ad and the a opic linear e ent, prope edical Gmb his value fits tabular repla inite elemen nalysis of th e. as composed datasheet pr of femoral c ent mantle w s modeled r of the bon cretization. T gular elemen n. Volume m ponent mes sys (ANSYS he simulatio alking in eac ponent. The e. The conta cetabular cup lastic. rties of the H) were pr (3) in the range cement fixati t model of e gait divided of 4 separat ovided by omponent w as designed egardless of e material in he goemetry ts first. Becau esh of 10-no h was expor , Inc.) input n was assum h load step head and in ct was used was neglect stainless st ovided by of on the in ely the as by the all in se de ted file ed are ner for ed. eel, the