Must-have teaching tool of musculoskeletal MRI
Referenzen zu: Labrum Wolkenstein
Snyder SJ, Karzel RP, Del Pizzo W et al. SLAP lesions of the shoulder. Arthroscopy 1990; 6: 274-279. https://doi.org/10.1016/0749-8063(90)90056-j Nacey NC, Fox MG, Bertozzi CJ et al.: Incidence of gadolinium or fluid signal within surgically proven glenoid labral tears at MR arthrography. Skeletal Radiol 2019; 48: 1185-1191. https://doi.org/10.1007/s00256-018-3143-x Symanski JS, Subhas N, Babb J et al.: Diagnosis of Superior Labrum Anterior-to-Posterior Tears by Using MR Imaging and MR Arthrography: A Systematic Review and Meta-Analysis. Radiology. 2017; 285: 101-113 https://doi.org/10.1148/radiol.2017162681 Arirachakaran A, Boonard M, Chaijenkij K et al.: A systematic review and meta-analysis of diagnostic test of MRA [...]
SLAP: Nacey NC et al., Skeletal Radiol 2019
The sensitivity and specificity of MR arthrography for SLAP lesions is about 80% and 90% (Symanski et al., Arirachakaran et al.). Nacey et al. pointed out that in 1/3 of the patients who underwent arthroscopic SLAP repair, the lesions in MR arthrography did not show signal intensity of fluid / gadolinium in T2 / T1. The authors also found that the diagnosis of a SLAP lesion in the absence of fluid / Gd signal is still possible if secondary findings support a SLAP lesion (lateral orientation of signal, extension posterior to the [...]
Acromion morphology, recent literature
For the association between acromion morphology and rotator cuff tears, two independent meta-analyses confirmed moderate evidence that a far lateral extension of the acromion is a risk factor for rotator cuff tears (Andrade R et al., Docter S et al.). The risk for a re-tear after primary rotator cuff repair also appears to increase with far lateral extension of the acromion (Docter S et al., Sheean AJ et al.). However, a reliable cut-off value cannot be given. This limits the clinical utility of the “critical shoulder angle” and the “acromion index”. For [...]
Acromial shape, downslope and lateral extension
In the section on acromial types and downslope a case was added that shows that a lateral downslope or a type 3 acromion does not at all mean that damage to the supraspinatus tendon must occur. The findings may be asymptomatic. In addition, a case was added in which an acromion extending far to the side is accompanied by a rupture of the supraspinatus tendon.
In this blog I will inform about news in the app, for example newly added MRI cases, new literature or revised versions.