髋关节MR造影在髋臼唇撕裂诊断中的应用

目的 探讨髋关节MR造影在髋臼唇撕裂诊断中的应用价值.方法 临床高度怀疑髋臼唇撕裂的15例20个髋关节在透视下行髋关节穿刺造影,采用SE T1WI加脂肪抑制技术,进行髋关节冠状面、矢状面、斜轴面及放射状位扫描.其中12例行关节镜检查.结果 在行髋关节镜检查的12例14个髋关节中,11例13个髋关节MR造影诊断为髋臼唇撕裂,与关节镜诊断相符;1例MR造影示正常,关节镜检查亦未发现髋臼唇撕裂.13个髋臼唇撕裂中位于前上象限12个髋关节,后上象限1个髋关节.在关节镜诊断髋臼唇撕裂的13个髋关节中,MR造影冠状面诊断髋臼唇撕裂3个髋关节,矢状面诊断10个髋关节,斜轴面及放射状位诊断髋臼唇撕裂均为13个髋关节.15例20个髋关节中有5例6个髋关节在后下象限有髋臼唇下沟表现.结论 MR髋关节造影是诊断髋臼唇撕裂的可靠方法,扫描方法应选择T1WI加脂肪抑制的矢状面及斜轴面或矢状面加放射状位.后下象限撕裂的诊断中应注意正常变异的存在.

Abstract：

Objective To investigate the application value of MR rthrography (MRA) in the diagnosis of acetabular labral tears. Methods Fifteen patients with a high degree of suspected acetabular labral tears received fluoroscope-guided injection of the contrast media into the hip joint ( hip arthrography) and fat-saturated spin-echo T1-weighted images were obtained in the coronal, sagittal, oblique-axial and radial planes. Hip arthroscopy was performed on 12 of them. Results Labral tears which were diagnosed in 11 patients by hip MRA were confirmed at hip arthroscopy. One patient showed no MRA indication of labral tear, also showed normal on arthroscopy. Tear in the anterior-superior quadrant 10 cases of 12 joints ( 12/13), posterior-superior quadrant 1 case of a joint (1/13). In 11 patients who underwent arthroscopy, hip MRA diagnosed 3 (3/13) joints labral tears in coronal planes, 10 (10/13) joints in sagittal planes and 13 (13/13) labral tears in axial-oblique and radial planes. In 15 patients with 20 hip joints, 5 cases 6 joints (6/20) with normal acetabular sublabral sulcus were performed. Conclusions MR arthrography of hip is a reliable method in the diagnosis of acetabular labral tears. Scanning method should be included fat-saturated spin-echo T1-weighted images in sagittal and oblique-axial planes or sagittal plus radial planes. The diagnosis of tor posterior-inferior quadrant should pay attention to the existence of a normal variation.     

Inadvertent intraosseous gadolinium injection during pediatric shoulder MR arthrography

A variety of problems can arise while performing MR arthrography of the shoulder. These have been well documented in the literature and range from improper patient selection to errors in technique or in the choice of imaging sequences. We present a rare case of inadvertent, painless intraosseous injection of dilute gadolinium into the proximal humeral epiphysis of a 13-year-old male athlete. The clinical relevance is discussed and technical recommendations are offered.     

Ultrasound in adhesive capsulitis of the shoulder: is assessment of the coracohumeral ligament a valuable diagnostic tool?

Objective To determine the accessibility of the coracohumeral ligament (CHL) by ultrasound (US) and to determine CHL thickness in adhesive capsulitis of the shoulder.Design and patients US examinations were carried out in 498 consecutive shoulders of 306 individuals (194 women and 112 men), mean age 47.4 years (range 15–92 years), in order to identify and measure the maximum thickness of the CHL. The patients were divided into three study groups: asymptomatic shoulders (n=121), painful shoulders (n=360) and shoulders with arthrographic evidence of adhesive capsulitis (n=17). The mean maximal thickness of CHL was compared among the 3 study groups (non-parametric test of Kruskal–Wallis, p<0.05).Results The CHL was visualized in 92 out of 121 shoulders in the asymptomatic group (76.0%), in 227 out of 360 shoulders in the painful shoulder group (63.0%), and in 15 out of 17 shoulders in the adhesive capsulitis group (88.2%). The average thickness of the CHL was significantly greater in adhesive capsulitis (3 mm) than in the asymptomatic (1.34 mm) and painful (1.39 mm) shoulders. No significant difference was found between asymptomatic and painful shoulders.Conclusion CHL depiction can be achieved in a reasonable proportion of shoulders. A thickened CHL is suggestive of adhesive capsulitis. More studies are needed for clinical validation of these data.     

Wrist arthrography: a simple method

A technique of wrist arthrography is presented using an adhesive marker-plate with radiopaque coordinates to identify precisely sites for puncture arthrography of the wrist and to obviate the need for fluoroscopic guidance. Radiocarpal joint arthrography was performed successfully in all 24 cases, 14 in the cadaveric wrists and 10 in the live patients. The arthrographic procedure described in this study is simple, safe, and rapid, and has the advantage of precise localisation of the site for puncture without need for fluoroscopic guidance.     

磁共振间接膝关节造影诊断膝关节损伤的价值

目的：评价磁共振间接关节造影诊断膝关节损伤的价值。方法：应用磁共振间接膝关节造影对31例膝关节损伤患者进行检查,并与关节镜或手术的诊断结果作比较。结果：磁共振间接膝关节造影诊断半月板损伤的敏感度为92.86%、特异度为98.73%;诊断前交叉韧带损伤的敏感度为100%、特异度为96%;诊断后交叉韧带损伤的敏感度为100%、特异度为100%;诊断侧副韧带损伤的敏感度为100%、特异度为96.08%。上述各项指标较平扫高,标志诊断可靠性的Kappa值两者无显著差异。结论：磁共振间接关节造影在膝关节损伤的诊断中有一定价值,可以作为平扫的补充检查手段。     

肩袖损伤的影像学诊断方法

目的比较常规MRI、肩关节腔造影和MRI肩关节腔造影检查对肩袖撕裂伤的诊断价值。方法32例临床拟诊为肩袖损伤的患者,在接受肩关节镜探查前顺序进行常规MRI、肩关节腔造影和MRI肩关节腔造影检查,以肩关节镜作为标准诊断,计算三种影像学检查方法诊断肩袖损伤的敏感性、特异性和准确性。结果32例患者经肩关节镜检查诊断为肩袖全层撕裂14例、肩袖部分撕裂6例、肩袖无撕裂12例。对于判定有无肩袖撕裂,常规MRI的敏感性、特异性和准确性分别为80/20、83/12和81&/32;肩关节腔造影分别为80/20、100/12和86(/32;MRI肩关节腔造影为100 /20、100/12和1002/32。对于判定有无肩袖全层撕裂,常规MRI的敏感性、特异性和准确性分别为79/14、83/18和81&/32;肩关节腔造影分别为93/14、94/18和940/34;MRI肩关节腔造影为100/14、94/18和971/32。结论MRI肩关节腔造影是诊断肩袖撕裂准确性较高的方法。     

The role of radiocarpal injection arthrography and magnetic resonance imaging in the diagnosis of triangular fibrocartilage complex injuries

ＵＩｎｓｔｉｔｕｔｅｏｆＯｒｔｈｏｐｅｄｉｃｓ ,ＸｉｊｉｎｇＨｏｓｐｉｔａｌ,ＦｏｕｒｔｈＭｉｌｉｔａｒｙＭｅｄｉｃａｌＵｎｉｖｅｒｓｉｔｙ ,Ｘｉ ａｎ 710 0 32 ,Ｃｈｉｎａ (ＺｈｕＱＳ)ＤｅｐａｒｔｍｅｎｔｏｆＯｒｔｈｏｐｅｄｉｃｓａｎｄＩｎｓｔｉｔｕｔｅｏｆＢｉｏｍｅｃｈａｎｉｃｓ ,ＮｏｂｕｈａｒａＨｏｓｐｉｔａｌ,Ｈｙｏｇｏ ,Ｊａｐａｎ (ＫａｔｓｕｙａＮｏｂｕｈａｒａ)ｌｎａｒｗｒｉｓｔｐａｉｎｉｓｏｎｅｏｆｔｈｅｃｏｍｍｏｎｗｒｉｓｔｄｉｓｏｒｄｅｒｓ .Ｔｈｅｃｏｍｍｏｎｅｓｔｉｎｊｕｒｙｉｓ…     

肩关节MR造影对肩关节前方盂唇病变的诊断价值

目的明确肩关节造影MR对肩关节前方盂唇病变的诊断价值，并比较中立位肩关节造影MR和外展外旋（abduction and external rotation, ABER）造影MR的价值。方法回顾性分析经证实的44例肩关节造影MR资料，以肩关节镜检查结果为金标准，对比中立位肩关节造影MR和ABER造影MR对肩关节前方盂唇病变的诊断价值。结果中立位肩关节造影MR对前方盂唇的诊断敏感度为79．3％（23／29），特异度为100％（15／15），准确度为86．4％（38／44）；ABER造影MR的敏感度为93．1％（27／29），特异度为100％（15／15），准确度为95．5％（42／44）。ABER造影MR显著提高了前方盂唇病变的诊断敏感度（P=0．037）。结论ABER造影MR可以提高肩关节前方盂唇病变的诊断敏感度。     

半月板损伤几种诊断方法的评价——物理诊断、关节造影、B超、MRI与关节镜诊断比较

作者对65例怀疑有半月板损伤的膝关节镜诊断结果进行分析,并分别报告了物理诊断、关节造影、B超和MRI的准确率,从而对每种检查方法进行评价.65例中20例分别进行了物理诊断、关节造影、B超、和MRI四项检查.对内侧半月板其准确率分别为60%、85%、50%、80%.敏感性分别为42.9%、57.1%、14.3%、71.4%.特异性为62.9%、100%、69.2%、84.6%.对外侧半月板其准确率分别为65%、75%、65%、90%.敏感性为81.8%、63.6%、63.6%、81.8%.特异性为44.4%、88.9%、66.7%、100%.作者认为对于半月板损伤单凭物理检查或B超难以作出正确的诊断,关节造影对内侧半月板损伤的诊断有较高的参考价值.MRI的准确率、敏感性与特异性高于其他检查,几乎可以代替关节造影、B超及诊断性关节镜检查.     

Assessment of factors that could affect the success of US-guided contrast injection for hip MR arthrography

Background

To retrospectively evaluate the association between possible influencing factors and failed first attempts to inject a contrast agent intra-articularly under ultrasound (US)-guidance for direct magnetic resonance (MR) arthrography of the hip joint.