Glenohumeral instability: Validity of low-field MRI for diagnosis of labral tears

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• 作者：A. Bartolomé ; ^a ; ¹ ; ⁶ ; ^{alicia_bartolome@fremap.es" class="auth_mail" title="E-mail the corresponding author} ; T. Pirogova^a ; ² ; ⁶ ; ^{umlautik@yahoo.es" class="auth_mail" title="E-mail the corresponding author} ; M.J. Bartolomé ; ^b ; ³ ; ⁶ ; ^{bartolomemariajose@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; R. Sá ; nchez^c ; ⁴ ; ⁶ ; ^{ricardo_sanchez_hidalgo@fremap.es" class="auth_mail" title="E-mail the corresponding author} ; F. Garcí ; a de Lucas^c ; ⁵ ; ⁶ ; ^{fernando_garcia@fremap.es" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Labral tear ; Bankart lesion ; SLAP lesion ; Perthes lesion ; ALPSA lesion
• 刊名：The Egyptian Journal of Radiology and Nuclear Medicine
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：47
• 期：4
• 页码：1521-1528
• 全文大小：1688 K

文摘

To analyze the MRI findings of a series of patients with symptoms of glenohumeral instability and determine whether the diagnosis of a torn labrum can be confirmed by surgical exploration.

Materials and methods

Between January 2005 and January 2011, low-field MRI was performed in a total of 190 patients. Surgical treatment was administered to 127 patients, and only 62 of them were subjected to diagnostic arthroscopy.

Results

A total of 127 patients (66.8%) underwent surgery. The most frequent surgical procedure was Arthroscopic Bankart Repair (62 cases, 48.8%) with a total number of correct MRI-based labral tear diagnoses of 50 (overall predictive value: 83.3%).

Discussion

The analysis found nearly 80% correct labral tear diagnoses. The majority of errors were related to the diagnosis of SLAP lesions and attributable to several factors.

Conclusion

Low-field MRI is an appropriate method to diagnose labral tears, with sensitivity levels of 83.3%. Nevertheless, in order to correctly determine the type of lesion present it is advisable, though not indispensable, to carry out a direct MR arthrogram, except in the case of SLAP lesions, where diagnosis is virtually impossible without the addition of intra-articular contrast (unless patients with glenohumeral effusion).