Figure 1

Three-dimensional CT Reconstructions Demonstrating Progressive SHEAR Deformities Misdiagnosed as Normal. Anterior (left) and posterior (right) three-dimensional CT reconstructions of bilateral CT scans of the upper extremities are depicted. Grade 2 (a), grade 3 (b), and grade 4 (c) SHEAR deformities are present in three OBPI patients that have 9.6%, 27.2% and 56.5% of the scapular body visible over the clavicle compared to the contralateral shoulder, respectively.