l-lumbar-fusion-a-prospective-cohort-study-with-a-minimum-five-year-follow-up-Anandjiwal
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PMID:21656051[PubMed-assuppliedbypublisher.Availableat:http://
www.ncbi.nlm.nih.gov/pubmed/21656051].
Reprintedwithpermissionfrom:SongKJ,ChoiBW,JeonTS,LeeKB,
ChangH.Adjacentsegmentdegenerativedisease:isitduetodiseasepro-
gressionorafusion-associatedphenomenon?Comparisonbetweenseg-
mentsadjacenttothefusedandnon-fusedsegments.EurSpineJ2011
Jun8.[Epubaheadofprint].Availableat:http://www.springerlink.com/
content/d75870075872l82q/.
doi:10.1016/j.spinee.2011.08.438
Adjacentsegmentdegenerationafterinstrumentedposterolateral
lumbarfusion:aprospectivecohortstudywithaminimumfive-year
follow-up.AnandjiwalaJ,SeoJY,HaKY,OhIS,ShinDC.Eur
SpineJ2011Jul22.[Epubaheadofprint]
PURPOSE:To(1)clarifytheroleofvariousriskfactorsinthedevelop-
mentofASD,(2)compareinstrumentationconfigurationwiththedevelop-
mentofASD,(3)correlatetheradiologicalincidenceofASDandits
clinicaloutcomeand(4)comparetheclinicaloutcomebetweenpatients
withradiologicalevidenceofASDandwithoutASD.
METHODS:Thisstudyprospectivelyexamined74consecutivepatientswho
underwentinstrumentedlumbar/lumbosacralfusionfordegenerativedisease
withaminimumfollow-upof5years.Amongthepatients,68wereenrolled
inthestudy.Allofthepatientshadundergonepreoperativeradiologicalassess-
mentandpostoperativeradiologicalassessmentatregularintervals.Theonset
andprogressionofASDchangeswereevaluated.Thepatientsweredividedin
twogroups:patientswithradiographicevidenceofASD(group1)andpatients
withoutASDchanges(group2).Comprehensiveanalysisofvariousriskfac-
torsbetweengroup1andgroup2patientswasperformed.TheVisualAnalog
Scale(VAS)wasusedtoevaluatetheclinicaloutcomeandthefunctionalout-
comewasevaluatedusingtheOswestryDisabilityIndex(ODI)beforeand
aftersurgeryalongwithradiologicalassessment.
RESULTS:RadiographicASDoccurredin20.6%(14/68)ofpatients.Pre-
operativediscdegenerationatanadjacentsegmentwasasignificantrisk
factorforASD.Otherriskfactorssuchastheageofapatientatthetime
ofsurgery,gender,preoperativediagnosis,lengthoffusion,instrumenta-
tionconfiguration,sagittalalignmentandlumbarorlumbosacralfusion
werenotsignificantriskfactorsforthedevelopmentofASD.Therewas
nocorrelationbetweenASDanditsclinicaloutcomeasdeterminedat
thefinalfollow-upsession.Inaddition,clinicaloutcomeofpatientswith
ASDandwithoutASDwerenotcomparable.
CONCLUSIONS:Patientswithpreoperativediscdegenerationatanadja-
centsegmentweremoreatriskforthedevelopmentofASD.Otherrisk
factorsincludinginstrumentationconfigurationwerenotsignificantlyasso-
ciatedwithASD.Therewasnocorrelationbetweenboththeradiological
developmentofASDanditsclinicaloutcomeandtheclinicaloutcomeof
patientswithandwithoutASD.
PMID:21786038[PubMed-assuppliedbypublisher.Availableat:http://
www.ncbi.nlm.nih.gov/pubmed/21786038].
Reprintedwithpermissionfrom:AnandjiwalaJ,SeoJY,HaKY,OhIS,
ShinDC.Adjacentsegmentdegenerationafterinstrumentedposterolateral
lumbarfusion:aprospectivecohortstudywithaminimumfive-year
follow-up.EurSpineJ2011Jul22.[Epubaheadofprint].Availableat:
http://www.springerlink.com/content/428070021582g410/.
doi:10.1016/j.spinee.2011.08.439
Tofuseornottofuseinlumbardegenerativespondylolisthesis:do
baselinesymptomshelpprovidetheanswer?KleinstueckFS,Fekete
TF,MannionAF,etal.EurSpineJ2011Jul24.[Epubahead
ofprint]
INTRODUCTION:Clinicalsymptomsinlumbardegenerativespondylo-
listhesis(LDS)varyfrompredominantlyradiatingpaintoseveremechanical
lowbackpain.WeexaminedwhethertheoutcomeofsurgeryforLDSvarieddependingonthepredominantbaselinesymptomandthetreatmentadmin-
istered[decompressionwithfusion(D&F)ordecompressionalone(D)].
METHODS:213consecutivepatients(6969years;155f,58m)partici-
pated.InclusioncriteriawereLDS,maximumthreeaffectedlevels,nopre-
vioussurgeryattheaffectedlevel,andD(N556)orD&F(N5157)asthe
operativeprocedure.Pre-opandat12months’follow-up(FU),patients
completedthemultidimensionalCoreOutcomeMeasuresIndex(COMI)in-
cluding0–10leg-pain(LP)andLBPscales.At12months’FU,patientsrated
globaloutcomewhichwasthendichotomisedinto‘‘good’’and‘‘poor’’.
RESULTS:Pre-operatively,LBPandCOMIscoresweresignificantly
worse(p!.05)intheD&FgroupthanintheDgroup.Theimprovement
inCOMIat12months’FUwassignificantlygreaterforD&FthanforD
(p!.001)andwasnotinfluencedbythepatient’sdeclared‘‘mainproblem’’
atbaseline(backpain,legpain,orneurologicaldisturbances)(pO.05).
Therewasahigherproportion(p5.01)of‘‘good’’outcomesat12months’
FUinD&F(86%)thaninD(70%).Multipleregressionanalysis,controlling
forpossibleconfounders,revealedtreatmentgrouptobetheonlysignificant
predictorofoutcome(addingfusion5betteroutcome).
DISCUSSION:OurstudyindicatedthatLDSpatientsshowedbetter
patient-basedoutcomewithinstrumentedfusionanddecompressionthan
withdecompressionalone,regardlessofbaselinesymptoms.Thismaybe
duetothefactthattheunderlyingslippageasthecauseofthestenosisis