Glenoid bone loss
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Anteroinferior glenoid bone loss (i.e. bony Bankart lesions) after anterior shoulder dislocations have been and can result in recurrent instability depending on size, especially in the context of bipolar shoulder lesions (i.e. combined Bankart and Hill-Sachs defect).
Glenoid bone loss can be assessed on CT or MRI (2D or 3D). Numerous techniques have been described with the two most commonly used and reliably accurate (as of 2019) being 1:
glenoid width (index) method
Other imaging techniques, which are yet to be comprehensively validated 1, include:
Arthroscopic measurements have often been held as the gold standard, however, the arthroscopic bare spot method has been shown to overestimate glenoid bone loss 1.