This article proceeds on the assumption that "reconstruction of the native plane of the eroded glenoid is "imperative for successful total shoulder arthroplasty". The concern about the effect of posterior glenoid erosion on glenoid component longevity has been discussed in a recent post.
The authors present a method that seems to predict what they refer to as the circular inferior plane of the glenoid in normal shoulders. This method has the disadvantage of requiring a CT scan. It does not appear to have been validated in arthritic shoulders and its clinical utility remains to be documented. Thus, we are not sure that at this point, this method provides clinically useful 'operative guidelines'.
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