A systematic review of the transiliac internal fixator (TIFI) for posterior pelvic injuries

Open Access

Review

Table 2

Biomechanical test series with TIFI.

Authors	Test models	Type of sacral fracture	Vertical load	Summary/Conclusion
Dienstknecht et al. [29]	6 freshly frozen human pelvis	6 unilateral transforaminal	3 cycles of 70% of the former body mass were performed max load not reported	TIFI compared to two IS screws were tested TIFI was not inferior compared to IS screws
Salasek et al. [30]	Computed image finite element	Unilateral transforaminal	250–500 N	TIFI has enough stiffness for unstable transforaminal fractures TIFI is superior compared to two IS screws
Shinohara et al. [31]	8 synthetic pelvic models	8 unilateral transforaminal	Max. load 1057 N Mean load for a 5 mm gap: 438 N	Double (dual) TIFI with crosslinks were used TIFI was superior compared to plate
Vigdorchik et al. [32]	6 synthetic pelvic models	3 unilateral transforaminal 3 IS joint dislocation	5 cycles; static load 10 mm/sec Mean load for a 7 mm gap: 81 N (sacral fracture) Mean load for a 7 mm gap: 71 N (IS dislocation)	Sacral fracture: TIFI was inferior compared to TIFI plus IS screw Sacral fracture: TIFI was equal to IS screw alone IS dislocation: TIFI was the weakest construct
Chaiyamongkol et al. [33]	12 synthetic pelvic models	12 unilateral transforaminal	280, 161, and 510 N Static load 10 mm/min Mean load for a 5 mm gap: 287 N	TIFI without IS screw was not tested TIFI plus one IS screw better than two IS screws or plate

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