磁共振与超声在肱二头肌长头腱损伤的诊断价值比较

目的 探讨磁共振(MR)和超声(US)检查在肱二头肌长头腱损伤中的诊断价值.方法 收集肩关节镜检证实的肱二头肌长头腱损伤患者80例,均行MR及US检查,以肩关节镜检结果为评价标准,分别计算MR和US诊断肱二头肌长头腱损伤的准确性、敏感性、特异性,比较2种检查方法的有效性.结果 80例患者中,肩关节镜证实肱二头肌长头腱完全撕裂19例,部分撕裂45例,肌腱炎10例,脱位6例.MR与US诊断肱二头肌长头腱完全撕裂、部分撕裂、肌腱炎及脱位的准确性分别为98.7%、92.5%、97.5%、100%和96.2%、85.0%、96.3%、98.7%.MR与US诊断肱二头肌长头腱完全撕裂、肌腱炎及脱位准确性差异无统计学意义(P>0.05),但MR诊断部分撕裂的准确性高于US(P<0.05).结论 MR在判断肱二头肌长头腱部分撕裂优于US.US检查可作为常规检查方法用于排查怀疑有肱二头肌长头腱损伤的患者.     

上方盂唇前后向撕裂的肩关节MR造影评价

目的 评价肩关节MR造影对上方盂唇前后向撕裂(SLAP损伤)的诊断价值.方法 由2名影像诊断医师独立回顾分析137例经肩关节镜证实的肩关节造影MR图像,判定有无SLAP损伤,并进行分型.SLAP损伤分4型:Ⅰ型为上盂唇毛糙,Ⅱ型为肱二头肌腱盂唇复合体从关节孟撕裂,Ⅲ型为上盂唇桶柄状撕裂,Ⅳ型为上盂唇桶柄状撕裂并同时累及肱二头肌长头腱.计算肩关节MR造影对SLAP损伤的敏感度、特异度和准确度,以及与肩关节镜分型的符合率.采用Kappa统计计算2名影像诊断医师评价的一致性.结果 137例患者中,肩关节镜证实SLAP损伤59例,包括SLAP损伤Ⅰ型6例(10.2%)、Ⅱ型50例(84.7%)、Ⅲ型3例(5.1%).肩关节MR造影的敏感度、特异度和准确度医师甲分别为86.4%(51/59)、78.2%(61/78)和81.8%(112/137),医师乙分别为88.1%(52/59)、84.6%(66/78)和86.1%(118/137).2名影像诊断医师的评价一致性极好(K=0.796).肩关节MR造影与肩关节镜的分型符合率医师甲为83.1%(49/59),医师乙为79.7%(47/59).结论 肩关节MR造影是评价SLAP损伤比较可靠的影像方法.     

肩袖撕裂的肩关节MR造影评价

目的 评价肩关节MR造影对肩袖撕裂的诊断价值。方法 分析32例病人的肩关节MR造影图像,评价内容包括肩袖肌腱、盂唇、肱二头肌长头腱,结果与肩关节镜及肩部开放手术比较。结果 以肩关节镜和手术结果为标准,32例病人包括14例全层撕裂,6例下表面部分撕裂,12例无撕裂。肩关节MR造影判定有无肩袖撕裂的敏感性、特异性和准确性都为100％;诊断全层撕裂的敏感性、特异性和准确性分别为100％、94％和97％。同时,肩关节MR造影还正确诊断了所有的多肌腱撕裂、合并的盂唇异常及肱二头肌长头腱异常。结论 肩关节MR造影可以准确、全面地评价肩袖撕裂。     

肩关节肱二头肌肌腱损伤的MRI表现

目的:探讨MRI对肩关节肱二头肌长头肌腱损伤的诊断价值。方法:收集2006年1月～2010年8月共12例肩关节肱二头肌长头肌腱损伤的病例资料,回顾性分析患者的肩关节MR扫描图像,所有病例均经肩关节手术证实。结果:①12例肱二头肌长头肌腱断裂,其中部分撕裂4例,表现为肱二头肌长头腱增粗,T2W上可见局部高信号影,肌腱连续性存在;完全撕裂8例,表现为横断面上,结节间沟内未见肱二头肌长头腱显示,斜冠状面可见撕裂肌腱近端或远端呈波浪状。肱二头肌长头肌腱半脱位1例,表现为横断面上,肱二头肌长头肌腱向内侧移位,位于肱骨小结节前方;脱位2例,表现为横断面示空置的结节间沟,肱二头肌长头腱向内侧移位、位于肩胛下肌腱前方;②肱二头肌长头腱损伤伴随腱鞘积液2例,表现为横断面上肌腱被液性高信号影所环绕;伴随肩关节腔内积液12例;③12例肱骨结节间沟宽度≥8mm;深度<3mm、结节间沟变浅3例;3例内壁角<30°;④合并肩袖损伤7例,其中冈上肌腱撕裂5例,冈下肌腱撕裂1例,肩胛下肌肌腱撕裂1例;合并喙肱韧带损伤11例。出现肩峰撞击综合征10例。结论:MRI能够准确的诊断肩关节肱二头肌长头肌腱损伤,从而有助于临床手术方案的制定。     

肩关节疼痛的MRI检查价值评估

目的评价MRI检查对肩关节疼痛疾病诊断的应用价值。方法分析34例肩关节疼痛患者的MRI表现,并与手术所见相对比,评估MRI对疾病诊断的准确性。结果34例患者肩关节磁共振成像扫描发现:肩袖完全撕裂、肩袖部分撕裂、肌腱炎、盂唇撕裂、滑膜炎、关节积液、肱二头肌长头腱鞘炎及肌腱脱位、肿瘤等。13例手术,其中1例MRI诊断为肌腱炎,手术结果为肩袖浅表部分撕裂;1例MRI表现正常,关节镜发现肱二头肌长头肌腱炎,其余11例手术所见与MRI表现基本一致,另21例经保守治疗,症状消失或好转。结论肩关节MRI能清晰显示出肩关节的复杂解剖结构,对慢性肩关节疼痛的病因诊断有较高的准确性,是一项有价值的检查方法。     

肩袖全层撕裂:肩关节MRI评价

目的 评价肩关节MRI对肩袖全层撕裂的诊断价值,并对比分析肩关节MRI造影和常规肩关节MRI的诊断性能.资料与方法 由两名影像诊断医师独立回顾分析264例肩关节MRI图像,包括127例常规肩关节MRI检查和137例肩关节MRI造影,分析结果与肩关节镜手术相比较.计算肩关节MRI评价肩袖全层撕裂的敏感性和特异性.采用Kappa统计计算两名影像诊断医师评价的一致性.结果 264例患者中,肩袖全层撕裂60例(冈上肌腱全层撕裂60例,冈下肌腱全层撕裂5例,肩胛下肌腱全层撕裂5例,小圆肌腱全层撕裂4例).肩关节MRI评估肩袖全层撕裂的敏感性和特异性两名医师分别为88.33%(53/60)和97.55%(199/204),95.00%(57/60)和95.10%(194/204),K=0.906.肩关节MRI与肩关节MRI造影对于肩袖全层撕裂的敏感性和特异性差异无统计学意义.结论 肩关节MRI是评价肩袖全层撕裂可靠的方法.对于冈上肌腱全层撕裂,肩关节MRI造影和常规肩关节MRI的诊断价值相似.     

后伸牵拉试验——一种诊断肱二头肌长头腱及滑车系统损伤敏感的新试验

目的:探讨后伸牵拉试验这种新的临床试验对肱二头肌长头腱及滑车系统损伤的诊断价值。方法:回顾性分析我科于2017年8月至2018年10月关节镜下治疗的181例患者资料。患者术前均进行全面的肩关节体格检查,包括2种常用于诊断肱二头肌长头腱损伤的传统临床检查法(Speed试验和Yergason试验)以及后伸牵拉试验。以肩关节镜诊断结果为"金标准",评估三种试验对诊断肱二头肌长头腱及滑车系统损伤的诊断价值,包括灵敏度、特异度、阳性预测值、阴性预测值等指标。结果:在181例肩关节损伤患者中发现85例(46.9%)滑车系统损伤、104例(57.5%)肱二头肌长头腱损伤。对于诊断肱二头肌长头腱损伤,后伸牵拉试验与Speed试验和Yergason试验相比有较高的灵敏度(75.0%)(P<0.001)和准确度(67.4%)(P≤0.018),但特异度较低(57.1%)(P≤0.041)。对于诊断滑车系统损伤,后伸牵拉试验灵敏度(82.4%)(P<0.001)和准确度(69.1%)(P≤0.001)较高,特异度(57.3%)与Speed试验和Yergason试验相比差异无统计学意义(P≥0.281)。内旋后伸牵拉试验诊断前内侧滑车系统损伤灵敏度、特异度分别为72.7%、75.2%;外旋后伸牵拉试验诊断后外侧滑车系统损伤灵敏度、特异度分别为80.0%、70.2%。结论:后伸牵拉试验是一种诊断肱二头肌长头腱及滑车系统损伤灵敏度和准确度较高的新临床试验,且有助于区分前内侧及后外侧滑车系统损伤。     

肩关节损伤的MR影像诊断

目的 探讨常规MRI和MR间接关节造影对肩关节损伤的诊断价值.方法 回顾分析经关节镜证实的90例肩关节损伤患者肩关节常规MRI和MR问接关节造影表现,其中肩袖病变组57例、盂肱关节不稳组33例.对常规MRI和MR间接关节造影诊断结果进行Fisher确切概率法比较.结果 (1)肩袖病变组中MR间接关节造影37例,显示部分撕裂10例,1例漏诊;显示完全撕裂17例,2例误诊,7例肩袖无撕裂.MR间接关节造影显示部分撕裂的敏感度、特异度、准确度分别为90.9%(10/11)、92.3%(24/26)、91.9%(34/37);显示完全撕裂的敏感度、特异度、准确度分别为89.5%(17/19)、94.4%(17/18)、91.9%(34/37).MR间接关节造影诊断肩袖部分及完全撕裂的敏感度及准确度均高于常规MRI(P<0.05).(2)盂肱关节不稳组中,盂唇损伤26例,Hill-sachs病变27例、反Hill-sachs病变2例、骨陛Bankart损伤7例、关节囊损伤18例.间接关节造影20例,显示盂唇损伤14例,1例漏诊,5例正常.MR间接关节造影显示盂唇损伤的敏感度、特异度、准确度分别为93.3%(14/15)、100.0%(5/5)、95.0%(19/20).前者诊断盂唇损伤的敏感度及准确度明显高于常规MRI(P<0.05).结论 MR检查特别是MR间接关节造影能够准确显示肩关节常见病变及相关组织的病理发展过程,为临床诊断及治疗提供影像学依据.     

MRI在肩关节疼痛疾病诊断中的应用

目的：探讨MRI在肩关节疼痛疾病诊断和鉴别诊断中的应用价值。材料和方法：对28例28侧肩关节疼痛患者，使用0．5T的MR仪行肩关节磁共振检查，分析MRI表现的形态学特点。结果：28例肩关节MRI扫描发现：肩袖完全撕裂、肩袖部分撕裂、肌腱炎、肩袖钙化、肩锁关节积液、肱二头肌腱长头腱鞘炎、肌膜脱位等。6例经手术证实，22例行保守治疗。结论：MRI由于其多平面成像的能力和优良的软组织对比，能详细显示肩关节的解剖结构，敏感地发现软组织异常，对肩关节疼痛的诊断和鉴别诊断有较高的应用价值。     

常规MRI及MRI肩关节造影在肩袖撕裂中的应用

目的:探讨常规MRI及MRI肩关节造影在肩袖撕裂诊断中的价值。方法:226例肩关节损伤的患者,分别行常规MRI及MRI肩关节造影检查,以近期肩关节镜检查为金标准,对比2种检查方法的敏感性及特异性。结果:常规MRI对肩袖撕裂诊断的敏感性为70.8%(17/24),特异性100%(2/2),准确性65.4%(17/26);MRI肩关节造影对肩袖撕裂的敏感性为95.8%(23/24),特异性100%(2/2),准确性88.5%(23/26)。两者的诊断敏感性差异有统计学意义(P=0.016)。结论:MRI肩关节造影可以显著提高肩袖撕裂诊断的敏感性。     

Association of biceps tendon tears with rotator cuff abnormalities: degree of correlation with tears of the anterior and superior portions of the rotator cuff

OBJECTIVE: This study was performed to examine the relationship and association of abnormalities seen in the long head of the biceps brachii tendon to abnormal findings in the rotator cuff. MATERIALS AND METHODS: One hundred eleven patients underwent MR imaging for shoulder pain followed by arthroscopic or open shoulder surgery from January 1997 to December 2000. Patients were identified by a retrospective search, and all consecutive patients having undergone both MR imaging and surgery were included in the patient cohort. Official MR imaging interpretations were compared with operative reports, and all findings were recorded. RESULTS: Twenty-three patients were identified with partial- or full-thickness tears of the long head of the biceps tendon. The sensitivity, specificity, and accuracy of unenhanced MR imaging of the shoulder for detecting these bicipital tears were 52%, 86%, and 79%, respectively. When a tear was present in the biceps tendon, the prevalence of supraspinatous, infraspinatus, and subscapularis tendon tears was 96.2%, 34.6%, and 47.1%, respectively. Patients with biceps tendon tears were significantly more likely to also have subscapularis tendon tears (p < 0.0001) and supraspinatous tendon tears (p < 0.008) than those patients who did not have biceps tendon tears. No significant relationship was found between the presence or absence of a biceps tendon tear and the presence or absence of a infraspinatus or teres minor tendon tear (p = 0.17). CONCLUSION: Tears of the long head of the biceps tendon have a statistically significant association with tears of the anterior and superior rotator cuff and are highly correlated with tears of the supraspinatous and subscapularis tendons. When tears of these tendons are detected, specific attention directed toward the long biceps tendon is warranted to characterize the status of this structure that provides additional stability to the shoulder joint.     

Bicipital groove dysplasia and medial dislocation of the biceps brachii tendon

The purpose of this study was to investigate the plain film finding of dysplasia of the lesser tubercle of the humerus and its relationship to medial dislocation of the tendon of the long head of the biceps brachii muscle as diagnosed by shoulder arthrography. Of 55 patients referred for arthrography of the shoulder because of undiagnosed shoulder pain, 12 demonstrated flattening of the medial wall of the bicipital tendon groove. Of these, 58% had medial dislocation of the biceps tendon, and 43% of patients with dislocation of the biceps tendon were also shown to have a tear of the rotator cuff. Since biceps tendon pathology has long been implicated in shoulder pain and weakness, assessment of the bicipital groove may provide important information in evaluating patients with potential abnormality of the biceps tendon.     

Width of high signal and extension posterior to biceps tendon as signs of superior labrum anterior to posterior tears on MRI and MR arthrography

OBJECTIVE: The purpose of our study was to determine the accuracy of two signs for superior labrum anterior to posterior (SLAP) tears: increased width of high signal between the superior labrum and glenoid, and high signal posterior to the biceps tendon. MATERIALS AND METHODS: Forty-one patients with SLAP tears and 40 patients without a tear at surgery who had undergone MRI or MR arthrography were retrospectively evaluated. The MR studies were combined and interpreted in a blinded manner. The reviewers measured the width of high signal that extended to the articular surface on oblique coronal images and determined whether the high signal extended posterior to the biceps. A Student's t test was used to determine statistical significance between the means of the signal width. RESULTS: High-signal width was greater in patients with a SLAP tear than in the control group on both MRI and MR arthrography (both p = 0.003). The sensitivity and specificity of at least 2.0 mm on MRI are 39% (11/28) and 89% (24/27) and at least 2.5 mm on MR arthrography are 46% (6/13) and 85% (11/13). The sensitivity and specificity of high signal posterior to the biceps are 54% (15/28) and 74% (20/27) on MRI and 69% (9/13) and 54% (7/13) on MR arthrography. CONCLUSION: Increased width of high signal has a moderate specificity but a poor positive predictive value for distinguishing a SLAP tear from a normal recess. In addition, labral signal posterior to the biceps tendon is not rare in patients with no SLAP tear.     

Anomalies of the long head of the biceps brachii tendon: clinical significance,MR arthrographic findings,and arthroscopic correlation in two patients

Two patients with clinically relevant anomalies of the long head of the biceps brachii tendon (LHBT) are presented with MR arthrography and surgical correlation. Such variations in the LHBT can mimic tears of the tendon itself or the adjacent superior labrum both on MR arthrography and at surgery. MR arthrographic features are recognizable and allow for correct prospective diagnosis, possibly averting unnecessary surgery. Although further study is needed, patients with these anomalies may be at increased risk for developing shoulder instability.     

MR arthrography of rotator interval, long head of the biceps brachii, and biceps pulley of the shoulder

The rotator interval and the long head of the biceps brachii tendon are anatomically closely associated structures believed to confer stability to the shoulder joint. Abnormalities of the rotator interval may be acquired or congenital and are associated with instability of the long head of the biceps brachii tendon. Clinical and arthroscopic diagnoses of rotator interval abnormalities and subtle instability patterns of the long head of the biceps brachii tendon are difficult. Magnetic resonance arthrography, owing to its superior depiction of ligaments with distention of the joint capsule, may be the procedure of choice, barring open surgery, for help in diagnosis of these conditions.     

Superior labrum anterior-posterior lesions: diagnosis with MR arthrography of the shoulder

PURPOSE: To determine the accuracy of magnetic resonance (MR) arthrography in the diagnosis of superior labrum anterior-posterior (SLAP) lesions of the shoulder. MATERIALS AND METHODS: From January 1995 to June 1998, MR arthrography of the shoulder was performed in 159 patients with a history of chronic shoulder pain or instability. Fifty-two patients underwent arthroscopy or open surgery 12 days to 5 months after MR arthrography. Diagnostic criteria for SLAP lesion included marked fraying of the articular aspect of the labrum, biceps anchor avulsion, inferiorly displaced bucket handle fragment, and extension of the tear into the biceps tendon fibers. Surgical findings were correlated with those from MR arthrography. RESULTS: SLAP injuries were diagnosed at surgery in 19 of the 52 patients (37%). Six of the 19 lesions (32%) were classified as type I, nine (47%) as type II, one (5%) as type III, and three (16%) as type IV. MR arthrography had a sensitivity of 89% (17 of 19 patients), a specificity of 91% (30 of 33 patients), and an accuracy of 90% (47 of 52 patients). The MR arthrographic classification showed correlation with the arthroscopic or surgical classification in 13 of 17 patients (76%) in whom SLAP lesions were diagnosed at MR arthrography. CONCLUSION: MR arthrography is a useful and accurate technique in the diagnosis of SLAP lesions of the shoulder. MR arthrography provides pertinent preoperative information with regard to the exact location of tears and grade of involvement of the biceps tendon.     

上臂“大力水手”畸形:磁共振影像评价及临床意义

目的探讨肱二头肌长头腱断裂形成上臂远端屈侧"大力水手"畸形的MRI特征,并结合临床病史和体征,提高对该损伤的诊断。方法搜集2014年4月至2018年5月共31例肱二头肌长头腱断裂导致"大力水手"畸形患者的临床和MRI影像资料,回顾性分析患者的上臂MRI影像特征和临床特点。结果31例"大力水手"畸形患者MRI上均可清晰分辨出断裂的二头肌长头腱远端位置、形态,冠矢状面T2WI上,断裂肌腱呈弹簧状回缩低信号带,周边环绕高信号水肿区,呈典型的"飘带征";横断面T2WI上,中央圆形低信号代表断裂肌腱残端,周边伴环形水肿高信号,呈"靶环征"。回缩的二头肌肌腹无明显信号异常,上臂伸直状态下MRI检查影像上形态改变不明显。患者和接诊医师常忽略数月前二头肌长头腱断裂致肩痛病史,临床上容易误诊为肿瘤或肿瘤样病变。结论肱二头肌长头腱断裂导致的上臂远端屈侧"大力水手"畸形,在常规磁共振影像上具有典型的特征。认识该典型特征,结合患者的临床病史和体征,对该损伤的诊断十分关键。