膝关节盘状半月板及其损伤的MRI诊断

目的 探讨盘状半月板及损伤的MRI表现及诊断标准.方法 回顾性分析经手术或关节镜证实的50例盘状半月板的MRI图像表现.结果 本组50例均为外侧盘状半月板,39例为厚板型,11例为楔型,44例合并不同程度损伤,损伤率达88%.冠状位MRI上外侧半月板体部宽度与同层面外侧胫骨平台的比率超过50%,矢状位连续3层或3层以上盘状半月板前后角相连形成"蝴蝶结"样改变,为盘状半月板诊断的可靠依据.结论 MRI是检查盘状半月板的首选方法,冠、矢状位可准确诊断盘状半月板.     

MRI对盘状半月板损伤的诊断价值

目的：探讨MRI对膝关节盘状半月板损伤的诊断价值,从而提高盘状半月板MRI诊断准确率。方法：收集36例行MRI检查并经关节镜或手术证实为盘状半月板的病人,对MRI冠状位、矢状位半月板进行测量分析,记录半月板后角厚度、板/面比率等数据,统计盘状半月板的发生率及合并损伤率,MRI与手术或关节镜诊断符合率,盘状半月板各型发生率等。结果：36例盘状半月板,均为外侧盘状半月板,未发现内侧盘状半月板,其中25例合并盘状半月板损伤,损伤发生率为89.29%（25/36）;其中板型21例、楔形12例、肥角型3例,诊断符合率分别为90.47%（19/21）、75.00%（9/12）、66.67%（2/3）;板/面比率范围为38%--92%。结论：盘状半月板多见于外侧半月板;盘状半月板特征性的MR表现是盘状半月板明显较正常半月板厚、大, MRI检查易于诊断;盘状半月板常并发半月板变性或撕裂。     

MRI诊断膝关节盘状半月板的价值探讨

目的:分析盘状半月板的MRI表现,提高盘状半月板诊断正确率。方法:回顾性分析经关节镜手术证实的22例盘状半月板的MRI表现。结果:本组22例盘状半月板均发生在外侧半月板,15例为板型,5例为楔形,2例为肥角型,19例(90%)合并不同程度损伤。在冠状位同层半月板与面胫骨平台宽径比值(板面比)超过20%,矢状位连续3层或3层以上盘状半月板前后角相连,呈"蝴蝶结"状,是诊断盘状半月板的可靠征象。结论:MRI对盘状半月板的诊断有重要价值,为临床诊断及治疗提供可靠依据。     

低场MR对膝关节盘状半月板及其损伤的诊断

目的 探讨低场MR对膝关节盘状半月板及其损伤的诊断价值.方法 回顾性分析89例(151膝)盘状半月板及其损伤MRI表现,与关节镜或手术对照.结果本组89例(151膝)盘状半月板中,88例(150膝)为外侧盘状半月板,1例(1膝)为内侧盘状半月板.本组中81例(138膝)伴半月板损伤,发生率约91.4%,MRI表现为半月板不同程度变性或撕裂.结论 低场MRI能准确判断盘状半月板类型及其损伤的范围及程度,是盘状半月板及其损伤的最佳检查方法.     

核磁共振对盘状半月板的诊断价值

目的:探讨膝关节盘状半月板的核磁共振(MRI)表现以及MRI诊断盘状半月板的标准.方法:对46例经关节镜证实的盘状半月板与30例非盘状半月板的膝关节MRI作对比研究.结果:在通过胫骨髁间隆起的冠状面上测量半月板的宽度及同一层面的胫骨平台的宽度的比率,盘状半月板超过50%.矢状面上,连续3层或3层以上显示盘状半月板的前后角相连形成"领结"样改变,而非盘状半月板只有2层有此表现.结论:MRI诊断盘状半月板及其继发病变具有很高的价值.     

膝关节盘状半月板撕裂的MRI诊断

目的探讨MRI对膝关节盘状半月板撕裂的诊断价值。方法回顾性分析经关节镜证实的74例膝关节盘状半月板损伤的MRI影像学资料和临床资料,分析其MRI征象,将74例膝关节盘状半月板损伤分为无撕裂、单纯水平撕裂、放射状撕裂、联合水平撕裂、复杂撕裂及纵向撕裂六组,与关节镜检查结果相对照,计算MRI诊断盘状半月板各型撕裂的敏感性、特异性及阳性和阴性预测值。结果 MRI检查诊断盘状半月板撕裂的敏感性为98.55%,特异性为100%,阳性预测值为98.55%,阴性预测值为83.33%。其中诊断单纯水平撕裂、放射状撕裂、联合水平撕裂、复杂撕裂及纵向撕裂的敏感性分别为95.00%、83.34%、90.94%、84.61%、87.5%,特异性分别为81.48%、95.23%、95.23%、98.36%、100%。结论 MRI可较好的对膝关节盘状半月板撕裂进行诊断,为临床制定合理的治疗方案提供依据。     

膝关节盘状半月板分型及损伤的MRI诊断表现分析

目的 探讨膝关节盘状半月板分型及损伤的MRI诊断.方法 回顾性分析42例盘状半月板的MRI图像表现,并与盘状半月板进行分型对照.结果 42例盘状半月板中,水平撕裂15例(35.7%),复合裂19例(45.2%),放射状撕裂6例(14.3%),纵形撕裂2例(4.7%).冠状位MRI上外侧半月板体部宽度与同层面外侧胫骨平台的比率超过50%,矢状位连续3层或3层以上盘状半月板前后角相连形成"蝴蝶结"样改变,为盘状半月板诊断的可靠依据.结论 MRI具有无创和影像清晰的特点,是检查盘状半月板的首选方法.     

膝关节盘状半月板分型及损伤的MRI诊断

目的:探讨膝关节盘状半月板的诊断标准、分型及损伤特点,以提高对盘状半月板及其损伤MRI表现的认识。方法:对30例盘状半月板的MRI表现进行分析,并对盘状半月板进行分型对照。病例纳入标准为符合盘状半月板的MRI诊断标准。结果:30例盘状半月板中,板型17例、楔型10例、肥角型3例,并发半月板变性或撕裂24例,损伤率达80%。冠状位MRI上半月板最小的横径与胫骨平台最大横径的比例超过20%,矢状位连续3层或3层以上盘状半月板前后角相连形成"蝴蝶结"样改变,为盘状半月板诊断的可靠依据。结论:盘状半月板多见于外侧半月板,常并发半月板变性或撕裂。MRI冠状位及矢状位可准确诊断盘状半月板及其变性或撕裂。     

盘状半月板MRI诊断及损伤分度

<正>膝关节盘状半月板是半月板的一种发育异常,形态呈盘状,又称盘状软骨,发生率约3-5%[1],是指半月板的宽度和高度的异常增大,容易发生半月板的撕裂及囊肿,外侧半月板多见,易引起软骨磨损及剥脱性骨软骨炎。MRI以其无创及对组织的高分辨率、对损伤的高敏感和特异性等特点已成为诊断膝关节盘状半月板及其损伤的重要手段。回顾分析在我院进行膝关节检查并经手术或关节镜证实的22例盘状半月板的MRI图像,观察其形态     

盘状半月板的磁共振成像诊断价值

<正>盘状半月板是一种发育性半月板畸形,因解剖结构的异常易引起损伤。磁共振成像(magnetic resonance imaging,MRI)诊断盘状半月板具有较高的特异性,其准确率为93.3%~100%,本研究收集我院2012—2014年经临床关节镜证实的30例膝关节盘状半月板,分析盘状半月板MRI征象,评估MRI诊断价值。1资料与方法1.1临床资料:本组30例中,男性12例,女性18例,年龄     

Discoid medial meniscus. Varied presentation of 3 knees

Discoid medial meniscus is a rarity. We present 2 cases, one with bilateral discoid medial menisci, and the other with both medial and lateral discoid menisci in the same knee. The radiological, MRI and arthroscopic findings in these knees and their association with various synovial plicae have been described. Both patients had good results after arthroscopic subtotal meniscectomy.     

膝关节半月板损伤的MRI影像分析

目的与关节镜结果相对照，回顾性分析膝关节半月板损伤的MRI表现。方法收集具有完整MRI与关节镜检查资料的患者58例，分析MRI影像改变，根据半月板内部MR信号特征将半月板损伤分为Ⅰ-Ⅲ级。结果58例患者、85个半月板中，MRI诊断工级损伤7个，Ⅱ级损伤34个，Ⅲ级损伤44个。以关节镜检查结果作为标准，MRI对半月板撕裂诊断的准确度为87．06％，敏感度为92．31％，特异度82．61％，阳性预测值为81．82％，阴性预测值为92．68％，MRI与关节镜检查对半月板撕裂的诊断差异无统计学意义。结论MRI检查对膝关节损伤的诊断具有明显独特性，可作为临床诊断膝关节半月板损伤的常用检查方法。     

乳腺钼钯、超声弹性成像与MRI临床用于诊断乳腺癌的随机对照分析

目的研究乳腺钼钯、超声弹性成像与MRI临床用于诊断乳腺癌的应用价值,为今后临床诊断提供参考与借鉴,以提高对乳腺癌的诊断水平。方法以我院收治的68例乳腺癌患者为研究对象,对其进行钼钯X线检查、超声弹性成像检查以及MRI检查,对比分析三种影像学检查方法检出肿块、毛刺征和钙化的情况,探讨钼钯X线、超声弹性成像与MRI临床用于诊断乳腺癌的应用价值。结果钼钯X线对肿块、毛刺征、钙化的检出率分别为50.0%、35.3%、73.5%;超声弹性成像对肿块、毛刺征、钙化的检出率分别为73.5%、51.5%、35.3%,MRI对肿块、毛刺、钙化的检出率分别为86.8%、77.9%、22.1%,钼钯X线联合超声弹性成像对三种的检出率比较好。结论钼钯X线检查、超声弹性成像检查具有操作简单、方便、费用低的优势,但是单一检查的准确率还有待提高,但是二者联合检查的准确率比较高;MRI检查的敏感性比较高,可以清楚显示乳腺内病变的细微结构,在临床实践中,可以将这三种两两结合进行检查,以提高对乳腺癌的准确诊断。     

关节镜下儿童外侧盘状半月板治疗

目的:分析关节镜下儿童外侧盘状半月板损伤的治疗方法与效果.方法:回顾性分析2006年8月至2008年10月儿童外侧盘状半月板损伤病例32例34膝(30例单侧,2例双侧),男性20例,女性12例,平均年龄11.2(8～16)岁.根据半月板撕裂范围及稳定性决定切除范围,其中行部分切除术28膝,次全切除术4膝,完全切除术2膝.结果:术后随访5月～26月(平均15月),行Lysholm膝关节功能标准评分,术前评分平均52.6(32～76)分,随访时评分平均90.2(74～100)分,术后膝关节功能显著改善(P<0.05).结论:应用关节镜治疗儿童外侧盘状半月板损伤取得良好的l临床效果.     

Torn discoid lateral meniscus treated with arthroscopic meniscectomy: observations in 62 knees

Background Discoid lateral meniscus of the knee is common in Chinese population. There has been considerable debate about the best treatment for discoid lateral meniscus tears. The purpose of this study was to observe the effect of arthroscopic meniscectomy for the treatment of discoid lateral meniscus tears. Methods Between July 1999 and December 2004, arthroscopic meniscectomy was performed on 62 menisci of 57 patients with discoid lateral meniscus tears （52 unilateral, 5 bilateral）. 41 menisci were ＂complete discoid meniscus＂, 21 =incomplete＂. According to the extent of the meniscus tears, partial meniscectomy was performed on 52 knees, total meniscectomy on 7 knees, and partial meniscectomy combined with meniscus suture on 3 knees through an arthroscope After the operations, early rehabilitation training programs, including straight-leg-raising and range-of-motion exercises, were carried out. 51 patients were followed up for 1 year 2 months to 6 years 5 months （mean, 3 years 3 months）, 6 patients were lost. Lysholm-Ⅱ scoring system was used to assess the function of the knee joints before the operation and during the follow-up. Results The operations on all the 62 knees were successful without complications. The patients could walk normally after completing the 2-week postoperation rehabilitation program. After 3-4 weeks they could lead a normal life and participate in a moderate amount of sports or other physical activities. The mean Lysholm-Ⅱ score was 89 （60--100） during the follow-up, which was significantly higher than that before the operation （50, range 34-74; P〈0.01）. 88% of the patients achieved excellent or good clinical results. Conclusions Arthroscopic meniscectomy is an alternative for treatment of discoid lateral meniscus tears with minimal traumatic effects. It can achieve early mobilization and a low complication rate, as well as the preservation of the meniscus structure and functions to the largest extent. In combination with proper rehabilitation training, the operation can lead to good or excellent results.     

Clinics in diagnostic imaging (139). Displaced medial meniscus bucket-handle tear

A 58-year-old man presented with knee pain and swelling, following a previous injury. A displaced bucket-handle tear of the medial meniscus was diagnosed on magnetic resonance (MR) imaging and subsequently confirmed by arthroscopy. MR imaging is accurate in diagnosing bucket-handle tears. The different MR imaging signs of bucket-handle tears include the double posterior cruciate ligament sign, displaced fragment in intercondylar notch sign, absent bow-tie sign, anterior flipped meniscus sign and coronal truncation sign. Specificity is increased when a combination of the different imaging signs is present. Understanding the meniscal anatomy and potential mimics of the bucket-handle tear is important in order to ensure an accurate diagnosis and appropriate management.     

超声对膝关节半月板撕裂的诊断价值

目的 以磁共振成像(MRI)作为诊断标准,评价超声对半月板撕裂的诊断价值.方法 收集我院2011年1月至12月因损伤后膝关节疼痛或不适感等症状入院的患者25例,病变关节30个,判断超声对半月板撕裂的诊断价值.结果 30个病变关节中,MRI诊断撕裂16个,超声正确诊断11个,5个漏诊、误诊,超声对半月板撕裂诊断的敏感性、特异性、准确性、阳性预测值、阴性预测值分别为69%、86%、77%、85%、71%.结论 超声是诊断半月板撕裂的一种有效可行的检查方法.