Supplemental S1 fixation for type C pelvic ring injuries: biomechanical study of a long iliosacral versus a transsacral screw

Journal of Orthopaedics and Traumatology

Official Journal of the Italian Society of Orthopaedics and Traumatology

Table 5 Comparison of load to failure for long iliosacral, transsacral, short iliosacral, and locked transsacral screw constructs

Group	Load to failure (in N)				P value in comparison with the other screw constructs
Group	Minimum	Maximum	Mean	Standard deviation	P value in comparison with the other screw constructs
Locked transsacral screws (from [34])*	929	1201	1056	118
Long iliosacral screws	398	849	546	174	0.008
Transsacral screws	414	931	635	196	0.016
Short iliosacral screws (from [34])	798	874	825	31	0.008

* Significantly different from the other three groups (multiple comparisons using Mann–Whitney U test with Bonferroni correction)