The concept of the "glenoid track" attempts to define critical and non-critical Hill-Sachs defects in relation to the extent of the glenoid bone loss [Di Giacomo G et al., Funakoshi T et al]. Although the concept and the corresponding measurements are the subject of ongoing discussion [Moroder et al.], it is currently recommended that the following information is provided in the report: the distance from the medial border of the Hill-Sachs-defect to the ISP footprint the depth of the Hill-Sachs-lesion and the amount of glenoid bone loss. This glenoid bone loss is [...]

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 [...]

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 [...]