Abstract
Objective: To evaluate the diagnostic performance of magnetic resonance (MR) arthrography of the shoulder in the diagnosis of anteroinferior labrum lesions, using arthroscopy as the reference standard and to classify these lesions. Methods: Institutional review board approval was obtained. The study population included 59 consecutive patients with history and clinical diagnosis of acute or chronic anterior shoulder instability. A total of 62 MR arthrograms were performed, since three patients had undergone a bilateral procedure. Arthroscopy, which was performed within a mean of 3 months (range 2-5 months) after MR arthrography, was used as the reference standard. Sensitivity, specificity, accuracy, positive and negative predictive values were then calculated. Results: MR arthrography showed a sensitivity of 96 % and a specificity of 80 % for the overall detection of anteroinferior labrum abnormalities. The diagnostic accuracy was 95 % and the positive and negative predictive values were 98 % and 66 % respectively. Ten lesions were non-classifiable on surgery, of which eight were non classifiable on MR arthrography also. Conclusions: MR arthrography is highly accurate for the detection and classification of shoulder anteroinferior labrum lesions. Shoulder surgeons can confidently rely on this method to determine which patients will benefit from arthroscopy. Main Messages: • MR arthrography is accurate for the detection and classification of shoulder labrum lesions.• MR arthrography is a valuable tool for the preoperative planning in acute or chronic instability.• Shoulder surgeons can rely on this method to determine which patients will benefit from arthroscopy.
| Original language | English |
|---|---|
| Pages (from-to) | 157-162 |
| Number of pages | 6 |
| Journal | Insights into Imaging |
| Volume | 4 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2013 |
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Keywords
- Anteroinferior labrum
- Arthroscopy
- MR arthrography
- Shoulder
- Shoulder instability
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
Cite this
Diagnostic performance of magnetic resonance arthrography of the shoulder in the evaluation of anteroinferior labrum abnormalities : A prospective study. / Fotiadou, Anastasia; Drevelegas, Antonios; Nasuto, Michelangelo; Guglielmi, Giuseppe.
In: Insights into Imaging, Vol. 4, No. 2, 2013, p. 157-162.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Diagnostic performance of magnetic resonance arthrography of the shoulder in the evaluation of anteroinferior labrum abnormalities
T2 - A prospective study
AU - Fotiadou, Anastasia
AU - Drevelegas, Antonios
AU - Nasuto, Michelangelo
AU - Guglielmi, Giuseppe
PY - 2013
Y1 - 2013
N2 - Objective: To evaluate the diagnostic performance of magnetic resonance (MR) arthrography of the shoulder in the diagnosis of anteroinferior labrum lesions, using arthroscopy as the reference standard and to classify these lesions. Methods: Institutional review board approval was obtained. The study population included 59 consecutive patients with history and clinical diagnosis of acute or chronic anterior shoulder instability. A total of 62 MR arthrograms were performed, since three patients had undergone a bilateral procedure. Arthroscopy, which was performed within a mean of 3 months (range 2-5 months) after MR arthrography, was used as the reference standard. Sensitivity, specificity, accuracy, positive and negative predictive values were then calculated. Results: MR arthrography showed a sensitivity of 96 % and a specificity of 80 % for the overall detection of anteroinferior labrum abnormalities. The diagnostic accuracy was 95 % and the positive and negative predictive values were 98 % and 66 % respectively. Ten lesions were non-classifiable on surgery, of which eight were non classifiable on MR arthrography also. Conclusions: MR arthrography is highly accurate for the detection and classification of shoulder anteroinferior labrum lesions. Shoulder surgeons can confidently rely on this method to determine which patients will benefit from arthroscopy. Main Messages: • MR arthrography is accurate for the detection and classification of shoulder labrum lesions.• MR arthrography is a valuable tool for the preoperative planning in acute or chronic instability.• Shoulder surgeons can rely on this method to determine which patients will benefit from arthroscopy.
AB - Objective: To evaluate the diagnostic performance of magnetic resonance (MR) arthrography of the shoulder in the diagnosis of anteroinferior labrum lesions, using arthroscopy as the reference standard and to classify these lesions. Methods: Institutional review board approval was obtained. The study population included 59 consecutive patients with history and clinical diagnosis of acute or chronic anterior shoulder instability. A total of 62 MR arthrograms were performed, since three patients had undergone a bilateral procedure. Arthroscopy, which was performed within a mean of 3 months (range 2-5 months) after MR arthrography, was used as the reference standard. Sensitivity, specificity, accuracy, positive and negative predictive values were then calculated. Results: MR arthrography showed a sensitivity of 96 % and a specificity of 80 % for the overall detection of anteroinferior labrum abnormalities. The diagnostic accuracy was 95 % and the positive and negative predictive values were 98 % and 66 % respectively. Ten lesions were non-classifiable on surgery, of which eight were non classifiable on MR arthrography also. Conclusions: MR arthrography is highly accurate for the detection and classification of shoulder anteroinferior labrum lesions. Shoulder surgeons can confidently rely on this method to determine which patients will benefit from arthroscopy. Main Messages: • MR arthrography is accurate for the detection and classification of shoulder labrum lesions.• MR arthrography is a valuable tool for the preoperative planning in acute or chronic instability.• Shoulder surgeons can rely on this method to determine which patients will benefit from arthroscopy.
KW - Anteroinferior labrum
KW - Arthroscopy
KW - MR arthrography
KW - Shoulder
KW - Shoulder instability
UR - http://www.scopus.com/inward/record.url?scp=84875640099&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84875640099&partnerID=8YFLogxK
U2 - 10.1007/s13244-013-0225-0
DO - 10.1007/s13244-013-0225-0
M3 - Article
C2 - 23397520
AN - SCOPUS:84875640099
VL - 4
SP - 157
EP - 162
JO - Insights into Imaging
JF - Insights into Imaging
SN - 1869-4101
IS - 2
ER -