Can we separately measure glenoid vs. humeral lateralization and distalization in reverse shoulder arthroplasty?
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Abstract
Lateralization and distalization in reverse shoulder arthroplasty (RSA) can be measured on anteroposterior (AP) radiographs using 2 previously described angles: lateralization shoulder angle (LSA) and distalization shoulder angle (DSA). However, these 2 angles measure global lateralization and distalization but do not allow to differentiate how much lateralization or distalization are attributable to the glenoid and the humerus. We hypothesized that new angles could allow us to separately measure glenoid vs. humeral lateralization and distalization. A more precise understanding of independent glenoid and humeral contributions to lateralization and distalization may be beneficial in subsequent clinical research.
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Journal of shoulder and elbow surgery, 33, 5, Elsevier, Amsterdam, 2024, https://doi.org/10.1016/j.jse.2023.09.026