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