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半月板桶柄状撕裂的MRI诊断与关节镜下分类的相关研究
刘亚非张兵赵玉霞
【摘要】
目的探讨MRI对半月板桶柄状撕裂的诊断与关节镜下分类的比较研究。方法分析63例患者
MRI桶柄状撕裂
65个经关节镜检查证实为半月板桶柄状撕裂的术前MRI的特征性表现,并将5种MRI征象(双后交叉韧带征、半月板翻转征、空领结征、碎块内移征和外周残半月板征)与关节镜下Dandy分型进行比较。结果
诊断符合率89.2%。碎块内移征和空领结征阳性率最高,分别为84.6%和81.5%;双后交叉韧带征(双PCL征)、半月板翻转征(双前角征)、外周残半月板征不如上二者普遍(阳性率分别为43%、21.5%、29.3%)。未发现外侧半月板双PCL征;内侧半月板交锁I型和Ⅱ型及外侧半月板半长全宽型、全长半宽型与MRI碎块内移征和空领结征有相关性;2例为半月板撕裂Ⅲ级信号,5例为假阴性。结论5种MRI征象中最少2种(碎块内移征和空领结征阳性率最高)以上出现应高度怀疑为桶柄状撕裂。
【关键词】膝关节;半月板;撕裂;磁共振成像;关节镜
MRimaging
First
ofmeniscal
bucket—handletears:aretrospectivestudyofsignsandtherelationto
arthroscopicclassification
People’sHospital
HUra-fei,ZHANGBing,ZHAOYu-xia.DepartmentofOrthopedic,the
of
Shangqiu,Shangqiu476100,China
Toevaluatethearthroscopicfindingsofmeniscalbuckethandletearsand
MRimeniscalbuckethandletearssuggestedinthelit-agingsignsofm
a
【Abstract】
to
Objective
correlatethemwiththe
pmposed
erature.Methods
includedin
our
hohadSixty—threepatientsw
tearswere
erediagnosisofbuckethandletearinarthroseopyw
study.Meniscal
evaluatedinarthroscopyaccordingtoDandy’Sclassification.
TheMRIswereretrospectivelyanalyzedregardingthefollowingfindings:absenceofbowtiesign,presenceofdoubleposteriorcruciate
ligament(PCL),fragmentwithintheintercondylarregion,flippedmeniscus
were
ferentialmeniscussign.Sensitivitysign,abnormalcircumualsign.Results
Lockedtypes
evaluatedforthepresenceofeachindivid—
edialmeniscusandhalf—length,wIandIIfragmentofmhole—width
were
andwholelength—-half—-weniscusinarthroscopyidthfragementoflateralmcorrelatedwithfrage—
mentwithintheintercondylarnotchandabsentbowtiesignsinMRI.Wedidn’tfindthedoublePCLsigninanyofthepatientswith
a
lateralmeniscalbuckethandle
tear.The
mostcommonsignsinMRimagingsandtheabsent
bowtie
ofmeniscalbuckethandletearswerethefragement
wereate
inthenotch
signsign.They
cmci
observedwithfrequencyof84.6%and81.5%respectively.Thepresenceofdoubleposterior
eniscussign,abnormligament,flippedmal
circumferential
The
meniscussignwereless
least
two
common(43%,
signs
21.5%and29.2%,respectively).Conclusionspresenceofat
ofthefiveMRI
shouldberegardedashighlysuggestiveforbuckethandletearsofmenisci.
【Keywords】
Knee;Menisci;Tear;MRI;Arthroscopy
半月板桶柄状撕裂为膝关节半月板损伤的一种特殊类型,这类患者临床症状重,关节交锁明显。由于这种撕裂需要手术治疗,延误治疗往往加重病情,因此MRI对桶柄状撕裂的诊断非常重要。本研究对MR/诊断的桶柄状撕裂与关节镜下参照Dandy分型进行对比研究,旨在探讨MR/对桶柄状撕裂的敏感性及误诊的原因分析。l资料与方法
1.1一般资料:2005年9月至2006年4月在我科诊
DOI:10.3760/ema.j.issn.1674—4756.2010.11.014作者单位:476100河南省商丘市第一人民医院骨一科
治的63例患者(经关节镜证实的半月板桶柄状撕裂),男40例,女23例,年龄17—46岁,平均25.5岁。所以患者均经膝关节MRI检查及关节镜手术治疗。半月板桶柄状撕裂类型根据Dandy分型进行分类。
1.2检查方法:应用德国西门子Symphony1.5T超导磁共振扫描仪,用肢体表面柔软线圈进行扫描。扫描1方法:矢状面自旋回波序列(spinecho,SE)T1W(TR=450激发(fast
ms,TE=13lowangle
ms)和梯度回波的快速小角度
sup—
shot,FLASH)加脂肪抑制(fat
Ins,TE=ll
pression,FS)T1W1(TR=669
ms,FA=
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