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31. Whiteside LA, Kasselt MR, Haynes DW. Varus-valgus and rotational stability inrotationally unconstrained total knee arthroplasty. Clin Orthop Relat Res. 1987;(219):147-57.32. Windsor RE, Scuderi GR, Moran MC, Insall JN. Mechanisms of failure of the femoraland tibial components in total knee arthroplasty. Clin Orthop Relat Res. 1989; 248:15-9;discussion 19-20.33. Fehring TK. Rotational malalignment of the femoral component in total kneearthroplasty. Clin Orthop Relat Res. 2000; 380:72-9.34. Freeman MA, Todd RC, Bamert P, Day WH. ICLH arthroplasty of the knee: 1968--1977.J Bone Joint Surg Br. 1978; 60-B(3):339-44.35. Hanada H, Whiteside LA, Steiger J, Dyer P, Naito M. Bone landmarks are more reliablethan tensioned gaps in TKA component alignment. Clin Orthop Relat Res. 2007;462:137-42.36. Dennis DA. Measured resection: an outdated technique in total kneearthroplasty. Orthopedics. 2008;31(9):940, 943-4.37. Tanaka K, Murastu H, Mizuno K, Kuroda R, Yoshiya S, Kurosaka M. Soft tissue balancemeasurement in anterior cruciate ligament-resected knee joint: cadaveric study as a modelfor cruciate-retaining total knee arthroplasty. J Orthop Sci. 2007;12(2):149-53.Figure LegendsFig. 1: New TKA tensorThe new tensor consists of three parts: upper seesaw plate, lower platform plate and extraarticularmain body (A). Two plates are connected to the extra-articular main body by the offsetconnection arm through a medial parapatellar arthrotomy, which permits reduction of the PFjoint while performing measurements (B).Fig. 2: Kinematics of joint component gap in different varus alignment groupsKnees increased in the joint component gap until 90º of knee flexion, and then decreasedtoward deep knee flexion in all three groups, with no significant difference among three groups.Fig. 3: Kinematics of varus imbalance in different varus alignment groupsKinematics of the varus imbalance showed slow increases in the varus angle from extension to90º of knee flexion. During flexion beyond 90º, the size of the varus angle kept constant values.The varus angle in the varus alignment > 20º group showed significantly larger values comparedto that of the other two groups in each angle. (#: P 20º group at 45 and 90 degree of flexion. (#: P
Friday, October 8, 2010, 11:10-11:50Session A13: Alternate Bearing Materials in ArthroplastyDeformation and Fracture Behaviors in a Biomedical Co-29Cr-6Mo-0.14NAlloy Analyzed by X-Ray Tomography*Hiroaki Matsumoto - Institute for Materials Research, Tohoku University - Sendai, JapanShingo Kurosu - Institute for Materials Research, Tohoku university - Sendai, JapanAkihiko Chiba - Tohoku University - Sendai, JapanCaroline Landron - Universite de Lyon - Lyon, FranceDamien Fabregue - Universite de Lyon, INSA-Lyon - Lyon, FranceEric Maire - Unversite de Lyon, INSA-Lyon - Lyon, France*Email: matumoto@imr.tohoku.ac.jpCo-Cr-Mo alloys represent the most important category of metallic biomaterial for surgicalimplant applications. Recently, Chiba et al. developed a new type of biomedical Co basedalloy of Co-29Cr-6Mo-0.14N alloy. In this alloy design, the content of N is intended to becontrolled to obtain the microstructure consisting of γ single phase. This developed alloyexhibits the lower stacking energy as compared to that of the practical bio-medical Co-Ni basedalloy, thereby resulting in the deformation behavior accompanied by strain induced ε martensitictransformation.In this work, the damage process leading to fracture during tensile testing of a biomedical gradeCo-29Cr-6Mo-0.14N alloy was analyzed on the basis of three-dimensional damage observationusing X-ray tomography and electron backscattered diffraction of the fractured specimen. Initialcracking occurred at grain and annealing twin boundaries, where strain concentrates due toimpingement of ε-hcp plates formed through strain induced martensitic transformation (SIMT).Crack propagated along interface between γ-fcc matrix and SIMTed ε-hcp on {111}, resultingin the occurrence of a quasi-cleavage fracture.Saturday, October 9, 2010, 8:15-9:00Session A17: Knee MechanicsA Sliding Stem in Revision Total Knee Arthroplasty Provides Stability andReduces Stress Shielding; a RSA Study Using Impaction Bone Grafting inSynthetic Femora*Huub Meijerink - UMC St Radboud Nijmegen - Nijmegen, The Netherlandsfile:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]
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Convened under the auspicious of es
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Special Thank YouISTA’s Board of
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Invited SpeakersJean Noel ArgensonM
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Thursday, October 7, 2010Session AS
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Oxinium Versus Metal on Polyethylen
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13:30 - 14:00Invited talk: Hip Arth
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What Can We Do With Periprosthetic
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New Concept in Soft Tissue Balancin
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Comparison of Drain Clamp After Bil
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Session - A7:45 - 8:15Invited talk:
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Massive Endoprosthetic Replacement
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Hydroxyapatite Block for Reconstruc
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13. Dilute Betadine Lavage Prior to
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37. Fluoroscopic Analysis of Advanc
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60. Influence of Impaction Forces o
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85. Surgical Wound Infection as a P
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Saturday, October 9, 2010, 8:15-9:0
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algorithm was tested for short incr
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Ten patients with fracture acetabul
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Saturday, October 9, 2010, 14:00-14
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*Email: drbaldiniandrea@yahoo.itThe
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evision surgery were aseptic loosen
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*Dante Parodi - Clinica Alemana De
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Thursday, October 7, 2010, 17:30-18
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and subsequent exposure time to rad
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of the patient during the acetabula
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FiguresFriday, October 8, 2010, 11:
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Results: No further revisions were
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Minimally Invasive Total Knee Arthr
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and are due to insufficient fixatio
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Methods: An inverse finite element
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Finally a subject-specific model co
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prosthesis component have been calc
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novel tools and devices that are ab
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from 48.6 to 92.2, while functional
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Friday, October 8, 2010, 8:00-8:30S
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The Kaplan-Meier survival rate was
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especially because most of the stan
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knee and offer a new development of
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This was the patient with revision
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Ain Shams UniversityCairo, EgyptPle
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Two-stage revision arthroplasty is
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inexpensive modular femoral compone
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successful treatment outcome was de
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Pathogen N PercentStaphylococcus au
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component as their permanent prosth
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FiguresFigure 1Friday, October 8, 2
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*Email: joseph.fetto@nyumc.orgNon-c
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MATERIAL AND METHODS423 total knee
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MATERIALS AND METHODSFrom January 1
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Introduction:Mike Reed - Wansbeck G
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Conclusions:To the best our knowled
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ing superior clinical results when
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one) in 11 (26%), type II (failure
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Correction of leg length discrepanc
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motion is separated from the transv
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Is the Frecnh Paradox a Reality? Lo
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uncovered in the remaining 53 hips.
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found in the currently used MOM bea
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followed since their initial presen
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ã€€On the axial plane, the ave
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For revision hip replacements, the
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Friday, October 8, 2010, 15:20-16:0
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ResultCup geometries with screws ha
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to insert the guide pin into the fe
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Page 158 and 159: In a recent investigation the effec
Page 160 and 161: Conclusions.Fixed valgus angle rese
Page 162 and 163: fluoroscopic analysis of kinematics
Page 164 and 165: vivo motion of MB total knee arthro
Page 166 and 167: ResultsMean follow-up was 6 yrs (SD
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Page 170 and 171: *J. Philippe Kretzer - Laboratory o
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Page 176 and 177: In the present study, the patella h
Page 178 and 179: characteristic of the MB prosthesis
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Page 182 and 183: The ceramic on ceramic strategy wit
Page 184 and 185: acetabulum, which with a modern por
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Page 188 and 189: Conclusion: The results of this stu
Page 190 and 191: The incidence of periprosthetic fra
Page 192 and 193: *Email: sgh_iizu@grn.janis.or.jpAbs
Page 194 and 195: components (78 %) that remained rig
Page 196 and 197: hydroxyapatite ceramic in bone tumo
Page 198 and 199: one month later to a mean value of
Page 200 and 201: Keywords: total knee arthroplasty,
Page 202 and 203: of the tensor (Fig. 1B). During eac
Page 204 and 205: structures including MCL cut for ac
Page 208 and 209: Corne van Loon - rijnstate hospital
Page 210 and 211: Osaka, JapanTomonori Arita - Gradua
Page 212 and 213: Gary Poehling - Wake forest univers
Page 214 and 215: mean Harris hip score was 98 points
Page 216 and 217: Discussion:This study demonstrates
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Page 220 and 221: we usually excise both ACL & PCL, s
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Page 224 and 225: Minimal invasive surgery (MIS)is ac
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Page 230 and 231: *Stephen Murphy - New England Bapti
Page 234 and 235: scratching effect against the femor
Page 236 and 237: Friday, October 8, 2010, 8:40-9:50S
Page 238 and 239: transformation associated with the
Page 240 and 241: Bearing Surfaces in Primary Total H
Page 242 and 243: Introduction: Proper rotational ali
Page 244 and 245: Materials and Method4 cases and 5 k
Page 246 and 247: to improve exposure in difficult ca
Page 248 and 249: We have used different stems (strai
Page 250 and 251: Saturday, October 9, 2010, 11:15-11
Page 252 and 253: Our preliminary results are encoura
Page 254 and 255: A modified titanium spinal pedicle
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Thursday, October 7, 2010, 8:30-9:2
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Use of a novel ligament gap balanci
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femur 659, proximal tibia 198, prox
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*Pietro Ruggieri - University of Bo
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The presentattion will focus on tec
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Accuracy of Femoral Component Align
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Results.Dislocation: no.Clinical ou
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iocompatible material to man,it is
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BackgroundThe current literature te
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axis and component positioning. We
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stability of joint in full extensio
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with femoralrevision combined with
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arthroplasty. Obesity is an appropr
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Conclusions:We conclude that with u
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There was no difference in function
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We present the results of a consecu
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Barbara Maestri - university of rom
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gap balancing and providing reasona
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Highly Crosslinked PE as Alternativ
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plastic limit of UHMWPe. Changes in
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equired blood transfusion (RD -0.34
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age limit for THA can be lowered.Fr
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lood transfusion might be necessary
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Thursday, October 7, 2010, 7:30-8:2
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The hammering sounds in press-fit i
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We investigated the period from fir
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technique.The subjects were 16 knee
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Persistent patellofemoral symptoms
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peak dynamic varus angle over time.
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slope on the medial side was minima
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for the follow-up examination. A te
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Tateaki Shimakawa - Tokushima Munic
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male.We retrospectively reviewed pr
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affected the interface stresses cal
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Introduction:Cadaveric Evaluation o
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defects.Conclusion: Periprosthetic
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FiguresFigure 1 Figure 2 Figure 3 F
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Poster: 4Testing High Performance A
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Background:Modular endoprosthetic r
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The mean follow up was 4.2 years (3
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compared to the attending surgeon.D
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Poster: 13Postural Control Features
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e extended to the cup with malposit
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Poster: 17A Novel Method to Determi
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and it’s the highest rate has bee
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otation and 19 had a paradoxical ti
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Poster: 23Lumbar Disc Replacement.
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VTE-, we considered that the two co
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Poster: 27Accuracy of Acetabular Cu
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Poster: 29In Vivo Measurement of Pe
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Poster: 31Clinical and Laboratory V
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Figure 1: Typical steps used for co
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Alignment & bonecutting errorsMeanT
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allowing bone cutting to consume 25
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17. Jonsson B, Astrom J. Alignment
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Branislav Jaramaz - The Western Pen
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Poster: 34What Is the Blood Transfu
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dislocation after total hip arthrop
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Poster: 38Intraarticular Injection
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Sudhir Rao - South London Heathcare
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*Naoyuki Katayama - Hokkaido Orthop
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198.5±5.5°and 157.0±7.5°, respe
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Introduction*Sujith Konan - Univers
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Poster: 48IntroductionRevision Hip
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In conclusion we have developed a s
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laxity on wear and joint kinematics
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measurement interval. The wear rate
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spring model for AP translation and
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Haider, H., Walker, P. S., 2002. An
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Poster: 52Development of a Constant
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*Takahiro Lida - Osaka City Univers
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coating, have been developed with t
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3. Push-out Biomechanical AnalysisM
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anodized/hydrothermally treated tit
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However, she then suffered from sev
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central osteophytes in hip osteoart
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Lucia Manunta - University - sassar
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Based on above measurement we had t
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3, 6, 12, 18, and 24 months post-op
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amorphous and degrades faster in th
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Conclusion: the longivity of hip ar
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Poster: 70Outcome of Ceramic-Cerami
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posterior structures (facets and fa
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After thirty-eight months in vivo,
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disadvantages are provided by this
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chipping of the insert. Therefore a
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Metal cups, embedded in a cast resi
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about their preferences regarding f
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A periprosthetic femoral fracture a
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Superficial wound infection occurre
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International scientific literature
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were balanced to within 2° to 3°
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ecause of deep infction. One was ma
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Poster: 91So Are Sutures Actually B
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patients having staged bilateral pr
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adiographs often underestimate the
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A total of 7 osteoarthritis hip wer
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Poster: 98Appropriate Spatial Desig
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Poster: 100Total Hip Arthroplasty i
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Poster: 102Aggressive Early Debride
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this study was to assess the agreem
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Hemiarthroplasty - an Innovative Me
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p=0.55. This minimal change in leng
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Poster: 109Severe Persistent Synovi
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*Email: jerome.tonetti@free.frIn pr
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in 5 QFT-G positive patients with a
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arthroplasty (TKA). In the other ha
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