Table 6. Distribution of the overall maximum stress (MPa) for five different defect volumes after the removal of the internal fixator.

Operating conditions	No defect + screw rod removal	1/5 defect + screw rod removal	2/5 defect + screw rod removal	3/5 defect + screw rod removal	4/5 defect + screw rod removal	5/5 defect + screw rod removal
Vertical load	10.784	10.8761	10.9911	11.6061	11.9119	11.9694
forward flexion	35.102	40.271	41.8297	41.8675	42.1102	42.2463
extension	39.790	41.0669	41.0807	41.6458	41.7535	42.7205
Right side flexion	36.2458	37.3155	38.7599	42.720	43.2807	54.4855
Left side flexion	35.0382	37.4641	38.2016	41.7184	41.9041	52.6343
Right rotation	13.0323	13.1189	13.1855	13.2253	13.7345	16.1691
Left rotation	11.5525	11.7248	11.7327	11.7443	11.7826	14.4292