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. 2021 Apr 30;142(6):1091–1098. doi: 10.1007/s00402-021-03898-w

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© The Author(s) 2021

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Fig. 4 — Different failure mechanisms. a Screw cut-out in group 1 (steel). b The screws show signs of deformation, but remain intact. c Screw breakage in group 2 (magnesium). The screw tips are still in the glenoid. d Screw cut-out in group 3 (PLLA). Again, the screws show signs of deformation, but remain intact