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. 2021 Aug 3;22:31. doi: 10.1186/s10195-021-00594-8

Fig. 3.

Fig. 3

A fractured set screw for the TFNa was discovered after removal and disassembly of the implant. Arrows point to engaging defect of the long prong with corresponding lesions on the helical blade consistent with fracture of the prong by the edge of the blade