Résumé
Objective To explore the application of 3D printing technology in the second staged revision of infection after hip replacement.Methods From July 2014 to July 2016,21 patients with postoperative infection after hip replacement needed for phase Ⅱ revision surgery were selected as the 3D printing group,while 21 patients who underwent hip replacement without 3D printing technique were selected as the control group.The acetabulum,femoral and other related data were obtained by CT scanning,using computer simulation and modeling in vitro,3D printing technology was used to print the model,showed the hip joint model and done the operation,after 2 to 3-year-follow-up,compared the effect and the Harris hip joint function score.Results Compared the operation time of the two groups,3D printing group average operation time was (86.4±31.5) min,while the control group was (131.7±29.6) min,the difference was statistically significant (P＜0.05);the Harris hip joint function score of 3D printing group was (41.4±7.8) point before operation,and after three years follow-up the score was (91.2 ± 6.9) point,the difference was statistically significant (P＜0.05).Conclusion 3D printing technology can be applied in the second stage revision surgery of infection after hip replacement,which has effective result.