Frankle et al. analyzed 216 glenoids in RSA candidates to develop a reproducible classification of glenoid morphology and quantify how each morphologic pattern affects options for central fixation and peripheral screw placement.
When planning RSA, use this classification to anticipate fixation challenges: posterior, global, and anterior erosion patterns will shorten your standard centerline below reliable fixation thresholds — pivot to the spine centerline axis and expect screw options to be limited to the inferior and anterior quadrants only.
Frankle et al. analyzed 216 glenoids in RSA candidates to develop a reproducible classification of glenoid morphology and quantify how each morphologic pattern affects options for central fixation and peripheral screw placement.
When planning RSA, use this classification to anticipate fixation challenges: posterior, global, and anterior erosion patterns will shorten your standard centerline below reliable fixation thresholds — pivot to the spine centerline axis and expect screw options to be limited to the inferior and anterior quadrants only.