Convened under the auspicious of esteemed endorsers - ISTA

More documents

Recommendations

Info

Alignment & bonecutting errorsMeanTibialcoronal(indegrees)Tibial postslope (indegrees)Femoralcoronal,(indegrees)Femoral Femoralsagittal (in distal cutdegrees) (in mm)Tibial cut(in mm)0.36 1.24 0.90 0.18 0.38 0.26St Dev 0.12 0.25 0.18 0.01 0.10 0.12Range 0 to 0.50 0.5 to 2.50 0 to 0 to 0 to 0 to 0.50Interobserveragreement (P value)Interobserveragreement1.50 0.40 1.00< 0.003
observers were able to do the experiment without surgical assistants. They found the templatesto be user-friendly and could be uniquely positioned, and held with one or 2 hands.DISCUSSIONMany authors 3,4,16,20,40 have questioned the accuracy of the surgical techniques for TKA, usingconventional instrumentation. The outcome of TKA is dependent on surgical techniques 7,8,36 ,and technical errors such as malalignment, may lead to early failure. 15,17,33,44 Variations insurgical performance and outliers in TKA still occur, and they may affect the outcome. 15-17,41Although the reported long-term implant survival for TKA in elderly patients is 90–95% after10–15 years. 12,32,33 , some authors have questioned the high success rates due, to pitfalls inoutcome measurement. 27,28 There is also a need to improve the relatively inferior outcomeresults of TKA for young, active patients, and revision surgery 32,35,38 , where the accuracy ofbone cutting is critical and errors can result in depletion of bone stock.Navigation and robotic techniques have recently been introduced, and several authors reportedtheir higher level of accuracy, compared with conventional instrumentations. 3,4,6,30,37,40However, navigation techniques still rely on conventional instrumentation for making thevarious bone cuts, and they require additional instruments and insertion of tracking pins. Thisdouble instrumentation system (navigation and conventional instrumentations) may overloadhospital inventory, sterilization services, and operating room time. The need to improveergonomics in the surgical workplace 39 would be more difficult with bulky navigation devicesthat require registration and continuous line of sight for tracking.Patient specific templating is another form of computer-assisted surgery and is based on theapplication of rapid prototyping technology. The latter has been used in dentistry andmaxillofacial surgery but its medical applications are still in their infancy. 24 Radermacher 31 firstreported this technique in orthopaedic applications, and there are few scattered reports 2,9 in theliterature describing its use for producing customized models and guides. A new generation ofpatient specific templating has been reported 10,11 , where templates act as a complete set ofinstruments for TKA that replace conventional instrumentation. The results of using thistechnique in 45 experimental TKA procedures, on 16 cadaveric and 29 plastic specimens werereported 11 . The templates eliminated medullary guides and significantly reduced operative time.The accuracy results were based on the analysis of postoperative CT scans for 6 randomcadaveric specimens. However, there was concern about the accuracy and reproducibility ofpositioning patient specific templates, particularly for new users.The technique of patient specific templating has its own drawbacks, as it requires CT scans,which are not a routine requirement for TKA. Unlike navigation, templating techniques do notnormally provide intraoperative measurements, since sizing, alignment and bone cutting aredetermined preoperatively. This study also has some limitations. The measurements for femoralrotation were only done for 3 observers, and were not complete. This was justified in theMethods section. Measurements were also done before, rather than after bone cutting. This hadthe advantage of eliminating errors, which are surgeon-dependent, rather than templatedependent.Intraoperative measurements using the current navigation techniques are routinelyperformed before bone cutting, as the cutting process itself cannot be navigated due to thevibration of the saw blades. It was also found to be unnecessary to waste resources and time, byfile:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]
Page 2 and 3:
Convened under the auspicious of es
Page 4 and 5:
Special Thank YouISTA’s Board of
Page 6 and 7:
Invited SpeakersJean Noel ArgensonM
Page 8:
Thursday, October 7, 2010Session AS
Page 12 and 13:
Oxinium Versus Metal on Polyethylen
Page 14 and 15:
13:30 - 14:00Invited talk: Hip Arth
Page 16 and 17:
What Can We Do With Periprosthetic
Page 18 and 19:
New Concept in Soft Tissue Balancin
Page 20 and 21:
Comparison of Drain Clamp After Bil
Page 22 and 23:
Session - A7:45 - 8:15Invited talk:
Page 24 and 25:
Massive Endoprosthetic Replacement
Page 26 and 27:
Hydroxyapatite Block for Reconstruc
Page 28 and 29:
13. Dilute Betadine Lavage Prior to
Page 30 and 31:
37. Fluoroscopic Analysis of Advanc
Page 32 and 33:
60. Influence of Impaction Forces o
Page 34:
85. Surgical Wound Infection as a P
Page 38 and 39:
Saturday, October 9, 2010, 8:15-9:0
Page 40 and 41:
algorithm was tested for short incr
Page 42 and 43:
Ten patients with fracture acetabul
Page 44 and 45:
Saturday, October 9, 2010, 14:00-14
Page 46 and 47:
*Email: drbaldiniandrea@yahoo.itThe
Page 48 and 49:
evision surgery were aseptic loosen
Page 50 and 51:
*Dante Parodi - Clinica Alemana De
Page 52 and 53:
Thursday, October 7, 2010, 17:30-18
Page 54 and 55:
Page 56 and 57:
and subsequent exposure time to rad
Page 58 and 59:
of the patient during the acetabula
Page 60 and 61:
Page 62 and 63:
FiguresFriday, October 8, 2010, 11:
Page 64 and 65:
Results: No further revisions were
Page 66 and 67:
Page 68 and 69:
Minimally Invasive Total Knee Arthr
Page 70 and 71:
and are due to insufficient fixatio
Page 72 and 73:
Methods: An inverse finite element
Page 74 and 75:
Finally a subject-specific model co
Page 76 and 77:
prosthesis component have been calc
Page 78 and 79:
novel tools and devices that are ab
Page 80 and 81:
from 48.6 to 92.2, while functional
Page 82 and 83:
Friday, October 8, 2010, 8:00-8:30S
Page 84 and 85:
The Kaplan-Meier survival rate was
Page 86 and 87:
especially because most of the stan
Page 88 and 89:
knee and offer a new development of
Page 90 and 91:
This was the patient with revision
Page 92 and 93:
Page 94 and 95:
Ain Shams UniversityCairo, EgyptPle
Page 96 and 97:
Two-stage revision arthroplasty is
Page 98 and 99:
inexpensive modular femoral compone
Page 100 and 101:
successful treatment outcome was de
Page 102 and 103:
Pathogen N PercentStaphylococcus au
Page 104 and 105:
component as their permanent prosth
Page 106 and 107:
Page 108 and 109:
FiguresFigure 1Friday, October 8, 2
Page 110 and 111:
Page 112 and 113:
Page 114 and 115:
*Email: joseph.fetto@nyumc.orgNon-c
Page 116 and 117:
MATERIAL AND METHODS423 total knee
Page 118 and 119:
MATERIALS AND METHODSFrom January 1
Page 120 and 121:
Page 122 and 123:
Page 124 and 125:
Introduction:Mike Reed - Wansbeck G
Page 126 and 127:
Conclusions:To the best our knowled
Page 128 and 129:
ing superior clinical results when
Page 130 and 131:
one) in 11 (26%), type II (failure
Page 132 and 133:
Correction of leg length discrepanc
Page 134 and 135:
motion is separated from the transv
Page 136 and 137:
Is the Frecnh Paradox a Reality? Lo
Page 138 and 139:
uncovered in the remaining 53 hips.
Page 140 and 141:
found in the currently used MOM bea
Page 142 and 143:
followed since their initial presen
Page 144 and 145:
ã€€On the axial plane, the ave
Page 146 and 147:
For revision hip replacements, the
Page 148 and 149:
Friday, October 8, 2010, 15:20-16:0
Page 150 and 151:
Page 152 and 153:
ResultCup geometries with screws ha
Page 154 and 155:
to insert the guide pin into the fe
Page 156 and 157:
to 8% of THA patients have cups mal
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
Page 168 and 169:
precision of implant placement. We
Page 170 and 171:
*J. Philippe Kretzer - Laboratory o
Page 172 and 173:
COM group whereas both components w
Page 174 and 175:
Page 176 and 177:
In the present study, the patella h
Page 178 and 179:
characteristic of the MB prosthesis
Page 180 and 181:
Friday, October 8, 2010, 15:00-16:0
Page 182 and 183:
The ceramic on ceramic strategy wit
Page 184 and 185:
acetabulum, which with a modern por
Page 186 and 187:
Friday, October 8, 2010, 14:00-14:5
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 206 and 207:
31. Whiteside LA, Kasselt MR, Hayne
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
Page 218 and 219:
Thursday, October 7, 2010, 8:00-8:5
Page 220 and 221:
we usually excise both ACL & PCL, s
Page 222 and 223:
true and false acetabulum2- In Femo
Page 224 and 225:
Minimal invasive surgery (MIS)is ac
Page 226 and 227:
Page 228 and 229:
Page 230 and 231:
*Stephen Murphy - New England Bapti
Page 232 and 233:
Page 234 and 235:
scratching effect against the femor
Page 236 and 237:
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:
Page 252 and 253:
Our preliminary results are encoura
Page 254 and 255:
A modified titanium spinal pedicle
Page 256 and 257:
Page 258 and 259:
Page 260 and 261:
Page 262 and 263:
Use of a novel ligament gap balanci
Page 264 and 265:
femur 659, proximal tibia 198, prox
Page 266 and 267:
*Pietro Ruggieri - University of Bo
Page 268 and 269:
The presentattion will focus on tec
Page 270 and 271:
Accuracy of Femoral Component Align
Page 272 and 273:
Results.Dislocation: no.Clinical ou
Page 274 and 275:
Page 276 and 277:
iocompatible material to man,it is
Page 278 and 279:
BackgroundThe current literature te
Page 280 and 281:
axis and component positioning. We
Page 282 and 283:
stability of joint in full extensio
Page 284 and 285:
with femoralrevision combined with
Page 286 and 287:
arthroplasty. Obesity is an appropr
Page 288 and 289:
Conclusions:We conclude that with u
Page 290 and 291:
There was no difference in function
Page 292 and 293:
We present the results of a consecu
Page 294 and 295:
Barbara Maestri - university of rom
Page 296 and 297:
gap balancing and providing reasona
Page 298 and 299:
Highly Crosslinked PE as Alternativ
Page 300 and 301:
plastic limit of UHMWPe. Changes in
Page 302 and 303:
equired blood transfusion (RD -0.34
Page 304 and 305:
age limit for THA can be lowered.Fr
Page 306 and 307:
lood transfusion might be necessary
Page 308 and 309:
Page 310 and 311:
The hammering sounds in press-fit i
Page 312 and 313:
We investigated the period from fir
Page 314 and 315:
technique.The subjects were 16 knee
Page 316 and 317:
Persistent patellofemoral symptoms
Page 318 and 319: peak dynamic varus angle over time.
Page 320 and 321: slope on the medial side was minima
Page 322 and 323: for the follow-up examination. A te
Page 324 and 325: Tateaki Shimakawa - Tokushima Munic
Page 326 and 327: male.We retrospectively reviewed pr
Page 328 and 329: affected the interface stresses cal
Page 330 and 331: Thursday, October 7, 2010, 17:30-18
Page 332 and 333: Introduction:Cadaveric Evaluation o
Page 334 and 335: defects.Conclusion: Periprosthetic
Page 336 and 337: FiguresFigure 1 Figure 2 Figure 3 F
Page 338 and 339: Poster: 4Testing High Performance A
Page 340 and 341: Background:Modular endoprosthetic r
Page 342 and 343: The mean follow up was 4.2 years (3
Page 344 and 345: compared to the attending surgeon.D
Page 346 and 347: Poster: 13Postural Control Features
Page 348 and 349: e extended to the cup with malposit
Page 350 and 351: Poster: 17A Novel Method to Determi
Page 352 and 353: and it’s the highest rate has bee
Page 354 and 355: otation and 19 had a paradoxical ti
Page 356 and 357: Poster: 23Lumbar Disc Replacement.
Page 358 and 359: VTE-, we considered that the two co
Page 360 and 361: Poster: 27Accuracy of Acetabular Cu
Page 362 and 363: Poster: 29In Vivo Measurement of Pe
Page 364 and 365: Poster: 31Clinical and Laboratory V
Page 366 and 367: Figure 1: Typical steps used for co
Page 370 and 371: allowing bone cutting to consume 25
Page 372 and 373: 17. Jonsson B, Astrom J. Alignment
Page 374 and 375: Branislav Jaramaz - The Western Pen
Page 376 and 377: Poster: 34What Is the Blood Transfu
Page 378 and 379: dislocation after total hip arthrop
Page 380 and 381: Poster: 38Intraarticular Injection
Page 382 and 383: Sudhir Rao - South London Heathcare
Page 384 and 385: *Naoyuki Katayama - Hokkaido Orthop
Page 386 and 387: 198.5±5.5°and 157.0±7.5°, respe
Page 388 and 389: Introduction*Sujith Konan - Univers
Page 390 and 391: Poster: 48IntroductionRevision Hip
Page 392 and 393: In conclusion we have developed a s
Page 394 and 395: laxity on wear and joint kinematics
Page 396 and 397: measurement interval. The wear rate
Page 398 and 399: spring model for AP translation and
Page 400 and 401: Haider, H., Walker, P. S., 2002. An
Page 402 and 403: Poster: 52Development of a Constant
Page 404 and 405: *Takahiro Lida - Osaka City Univers
Page 406 and 407: coating, have been developed with t
Page 408 and 409: 3. Push-out Biomechanical AnalysisM
Page 410 and 411: anodized/hydrothermally treated tit
Page 412 and 413: However, she then suffered from sev
Page 414 and 415: central osteophytes in hip osteoart
Page 416 and 417: Lucia Manunta - University - sassar
Page 418 and 419:
Based on above measurement we had t
Page 420 and 421:
3, 6, 12, 18, and 24 months post-op
Page 422 and 423:
amorphous and degrades faster in th
Page 424 and 425:
Conclusion: the longivity of hip ar
Page 426 and 427:
Poster: 70Outcome of Ceramic-Cerami
Page 428 and 429:
posterior structures (facets and fa
Page 430 and 431:
After thirty-eight months in vivo,
Page 432 and 433:
disadvantages are provided by this
Page 434 and 435:
chipping of the insert. Therefore a
Page 436 and 437:
Metal cups, embedded in a cast resi
Page 438 and 439:
about their preferences regarding f
Page 440 and 441:
A periprosthetic femoral fracture a
Page 442 and 443:
Superficial wound infection occurre
Page 444 and 445:
International scientific literature
Page 446 and 447:
were balanced to within 2° to 3°
Page 448 and 449:
ecause of deep infction. One was ma
Page 450 and 451:
Poster: 91So Are Sutures Actually B
Page 452 and 453:
patients having staged bilateral pr
Page 454 and 455:
adiographs often underestimate the
Page 456 and 457:
A total of 7 osteoarthritis hip wer
Page 458 and 459:
Poster: 98Appropriate Spatial Desig
Page 460 and 461:
Poster: 100Total Hip Arthroplasty i
Page 462 and 463:
Poster: 102Aggressive Early Debride
Page 464 and 465:
this study was to assess the agreem
Page 466 and 467:
Hemiarthroplasty - an Innovative Me
Page 468 and 469:
p=0.55. This minimal change in leng
Page 470 and 471:
Poster: 109Severe Persistent Synovi
Page 472 and 473:
*Email: jerome.tonetti@free.frIn pr
Page 474 and 475:
in 5 QFT-G positive patients with a
Page 476 and 477:
arthroplasty (TKA). In the other ha
Page 478:
file:///E|/ISTA2010-Abstracts.htm[1
show all

Convened under the auspicious of esteemed endorsers - ISTA

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?