Evaluating Glenoid Bone Loss Location Using Best Fit and Outer Circles: Are We Pointing in the Same Direction?

The defect locations of the outer circle and best fit circle differed statistically. Although the mean difference was <1 hour, caution is needed when interpreting findings across studies or in surgical communication, as reference points or clockface systems may differ between them. Among these locations, the orientation of the defect line appears stable with respect to defect size in each circle, suggesting that the defect may serve as a reliable reference for describing anchor or bone block placement during surgery.