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we usually excise both ACL & PCL, still it is possible to retain more soft tissue. Both PCLretaining & sacrificing Require intact collaterals for stability. Superficial MCL & LCL shouldbe preserved, if possible.after PCL removal the following advantages could obtain : More correction of fixed varus orvalgus deformity , More surgical exposure . but there are no proved disadvantages like ;increasing in stress & loosening of bone-cement-prosthesis interface , specific clinicaldifference in ROM , forward lean during stepping up , proprioception inferiority . in otherhand Over tight PCL cause excessive rollback of tibia & knee hinges open ,preventing flexion(booking) , and Severe posteromedial poly wear in poor balance PCL might be happened .Mid range laxity when Post.Capsule is tight ,even with correct tensioning in full extension &90 degree flexion , may occur ( and secondary collateral ligaments imbalance throughoutROM) . There is a major effect of capsular contracture in coronal mal alignment with flexioncontracture. Full MCL releases not only correct fixed varus but also open the medial space inflexion. MCL & post. Capsule has combined valgus resistant effect in extension. PCL releaseincrease flexion gap more, May be necessary to release something that affect extension gap ascompensated balancing ( Post.medial capsule) .Any flexion contracture need to posteriorcapsulotomy & post. Condyle osteophyte removal before femoral recut.So it is possible to perform posteromedial capsulotomy prior to superficial MCL release.Method :From May to Dec. 2009 ,22 patients ( 23 knees ) with primary DJD and varus deformity ofknees were operated by myself with joint replacement . most patients had some degree ofvarus correction in flexion , passively . the varus angle was less than 25* , means mild to severebut not decompensated . For soft tissue balancing during Total knee arthroplasty I consider thefollowing steps;Medial capsule & deep MCL release, PCL release, Posteromedial capsulotomy ,semimembranous release , Superficial MCL release , Pes anserinous release . Post.medialcapsulotomy was done in all cases.The Average Age was 64.74 years, 19 patients were female (83%) and one of them hadbilateral TKA simultaneously. Lt Knee was operated in 14 cases (70% of 24). Spinalanesthesia was applied in 82%. 10 patients were operated with MIS technique and 13 patientswith Standard medial parapatellar incision. Semi membranous release was necessary in 4cases ( preop varus 17,20,24,25*) . MCL release was mandatory in 2 cases ( preop varus 17, 24 * & No Flexibility in 30* flexion).for checking balanced medial and lateral subtle laxity (playing), I have used simple blade with 1 & 2 mm thickness in each ends for younger patients ,and the other one with 3&4 mm thickness in elder cases .Results:Average follow up period is 234.45 days. Average Operating time was 1 : 32 (h:m) . AverageTransfusion = 1.22 unit packed cell . No Flexibility in 30* flexion was seen in 3 patients.Average varus malalignment =15.29* (2-25*) / Av. Valgus angle = 7.19* (5-10 *) / Av.DLFA = 90.47* (87-93*) / Av. PMTA = 83.41* (77-88.5*) / Av. Ext. rotation cut =3.11*Stage l + PCL + Post.Med. Capsular release was performed in 82.61% . / Av. Post opalignment : 1.8 * varus ( 0 -6 *) ( worse in medial pivot knee) .Av. Polyethylen size : 12.4 (9 in oxynium -19 in plus) / Semi membranous release wasnecessary in 4 cases ( preop varus 17,20,24,25*) ( Post.Op varus 1,6,4,2) . / S.MCL releasefile:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]
was mandatory in 2 cases ( preop varus 17 , 24 * & No Flexibility in 30* flexion) (Post.Opvarus : 1 , 4 *) .pre operation knee society score : stage I = 27.8 , stage II = 37.9 increase to stage I = 85.47 ,stage II = 75.65Conclusion:In society with more kneeling habitués , during performing total knee arthroplasty with less than25* degree varus malalignment plus some degree flexibility of the deformity in flexion , it iswise to consider posteromedial capsular release prior to semi membranous & S.MCL release toobtain full correction of alignment. But the most important things is reaching to full align limbregardless of which chosen technique.Thursday, October 7, 2010, 9:00-9:50Session A2: Alternate Bearings in THA 2Total Hip Replacement in High Riding DDH,Using Proximal Femoral NeckShortening Osteotomy, in L Step Cut Fashion*Ataollah Moshirabadi - National Iranian Oil Company(NIOC) Hospital - Tehran, IranTotal hip replacement in high riding DDH*Email: atamoshirabadi@yahoo.comUsing proximal femoral neck shortening osteotomy, in L step cut fashionA.Moshirabadi , M.D.Consultant Hip and Knee surgeonNIOC Hospital, TehranBackground:There are many difficulties during performing total hip replacement in high riding DDH. Thesedifficulties include:1- In Acetabular part : bony defect in antero lateral acetabular wall / finding true centre ofrotation / shallowness of true acetabulum / hypertrophied and thick capsular obstacle betweenfile:///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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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
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Page 188 and 189: Conclusion: The results of this stu
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Page 192 and 193: *Email: sgh_iizu@grn.janis.or.jpAbs
Page 194 and 195: components (78 %) that remained rig
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Page 200 and 201: Keywords: total knee arthroplasty,
Page 202 and 203: of the tensor (Fig. 1B). During eac
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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
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Page 216 and 217: Discussion:This study demonstrates
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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
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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
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Page 252 and 253: Our preliminary results are encoura
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Page 262 and 263: Use of a novel ligament gap balanci
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Page 266 and 267: *Pietro Ruggieri - University of Bo
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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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