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defects.Conclusion: Periprosthetic fractures have such a range of clinical presentations that they needto be managed on individual basis. The best functional results for stable implants gived internalfixation with a plate. Alternative osteosynthetic techniques and additive minimal osteosynthesiscan work better in special cases. Modular prostheses for bone replacement are a method ofchoice for fractures with extensive bone loss. Nonoperative treatment should only be performedin exceptional cases. Periprosthetic fractures are serious complications because of the mortalityand the difficulty in achieving functional recovery after treatment. Our primary aim isremobilization as early as possible-that is the best prevention of secondary complications.Keywords:Periprosthetic fractures, Total hip replacement, Total knee replacement, Revision arthroplastyPOSTERSfile:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]
Poster: 1Pyoderma Gangrenosum in Revision Total Hip Arthroplasty: Clinical andHistopathological Findings.- - ,Ariella Zbar - UVIC / UBC Island Medical School - Victoria, CanadaJames Mathers - UVIC/UBC Island Medical School - Victoria, CanadaDouglas Sawyer - UVIC-UBC Island Medical School - Victoria, Canada* - - ,Introduction: Pyoderma gangrenosum (PG) is a medically treatable neutrophilic ulcerativedermatosis which may occur in surgical or traumatic wounds. This poster report describes theclinical and histopathological findings associated with PG in revision total hip arthroplasty(THA).Methods: A 76 year-old male underwent revision THA and required warfarin for paroxysmalatrial fibrillation. Postoperatively, he developed wound drainage, skin blistering with bullae anda necrotic purulent appearance, and an elevated INR(6.8). He returned to the OR for presumedinfection (or possible warfarin induced skin necrosis), underwent irrigation and debridement –the fascia was intact and cultures were negative. A well-demarcated atypical ulcer, with anirregularly bordered area of redness was noted around the wound, which was biopsied inmultiple locations. At 3-years following revision, the hip is functioning normally and the ulcerand skin have remodelled and the patient is asymptomatic (Fig 4)Results: The histology of the biopsy demonstrates the typical findings associated with PGincluding (Fig 1,2)ulceration with epithelial undermining. The ulcer is covered byfibrinopurulent exudate along with the presence of a dense dermal neutrophilic infiltrate. Highermagnification (Fig 3) demonstrates lysis of collagen within the ulcer. Warfarin induced skinnecrosis would show vascular thrombi with initial bland necrosis, differentiating it from PG.Discussion: PG is a clinically distinctive, but non specific, necrotic ulcer that may occur at asurgical site and may mimic infection or warfarin-induced skin necrosis. PG is previouslyunreported in revision THA. Confirmation of the diagnosis requires clinical-pathologiccorrelation and exclusion of infection by appropriate microbiological studies. This is importantas the primary management is medical and not surgical.Summary: Pyoderma Gangrenosum is a necrotic ulcer which may mimic surgical infection orwarfarin induced skin necrosis. PG is previously unreported in revision THA, and is treatable.Figure legend:Figure 1: The biopsy shows (a) ulceration with epithelial undermining. The ulcer is covered byfibrinopurulent exudates along with the presence of a dermal neutrophilic abscess.(Haematoxylin-Eosin, 40x)Figure 2: Epithelial undermining shown in a higher power view. (Haematoxylin-Eosin, 100x)Figure 3: Higher magnification demonstrates lysis of collagen within the ulcer. (Haematoxylin-Eosin, 200x)Figure 4: Clinical photograph of the healed ulcer over the right hip at 36 months postop.file:///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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to 8% of THA patients have cups mal
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In a recent investigation the effec
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Conclusions.Fixed valgus angle rese
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fluoroscopic analysis of kinematics
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vivo motion of MB total knee arthro
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ResultsMean follow-up was 6 yrs (SD
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precision of implant placement. We
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*J. Philippe Kretzer - Laboratory o
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COM group whereas both components w
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In the present study, the patella h
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characteristic of the MB prosthesis
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Friday, October 8, 2010, 15:00-16:0
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The ceramic on ceramic strategy wit
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acetabulum, which with a modern por
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Friday, October 8, 2010, 14:00-14:5
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Conclusion: The results of this stu
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The incidence of periprosthetic fra
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*Email: sgh_iizu@grn.janis.or.jpAbs
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components (78 %) that remained rig
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hydroxyapatite ceramic in bone tumo
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one month later to a mean value of
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Keywords: total knee arthroplasty,
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of the tensor (Fig. 1B). During eac
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structures including MCL cut for ac
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31. Whiteside LA, Kasselt MR, Hayne
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Corne van Loon - rijnstate hospital
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Osaka, JapanTomonori Arita - Gradua
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Gary Poehling - Wake forest univers
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mean Harris hip score was 98 points
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Discussion:This study demonstrates
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Thursday, October 7, 2010, 8:00-8:5
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we usually excise both ACL & PCL, s
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true and false acetabulum2- In Femo
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Minimal invasive surgery (MIS)is ac
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*Stephen Murphy - New England Bapti
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scratching effect against the femor
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transformation associated with the
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Bearing Surfaces in Primary Total H
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Introduction: Proper rotational ali
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Materials and Method4 cases and 5 k
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to improve exposure in difficult ca
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We have used different stems (strai
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Our preliminary results are encoura
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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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Page 288 and 289: Conclusions:We conclude that with u
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Page 294 and 295: Barbara Maestri - university of rom
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Page 326 and 327: male.We retrospectively reviewed pr
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Page 332 and 333: Introduction:Cadaveric Evaluation o
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
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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
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Page 356 and 357: Poster: 23Lumbar Disc Replacement.
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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
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Page 374 and 375: Branislav Jaramaz - The Western Pen
Page 376 and 377: Poster: 34What Is the Blood Transfu
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Page 380 and 381: Poster: 38Intraarticular Injection
Page 382 and 383: 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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