基于Mimics三维重建个性化锁骨钩钢板塑形技术及疗效分析

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Abstract Objective To perform three-dimensional(3D) reconstruction and measurement of the acromioclavicular joint dislocation(AJD) structureusing Mimics software，quantitatively guide the shaping of the clavicular hook plate (CHP)，and compare its clinical efficacy with the traditional empirical shaping plate. Methods 42 consecutive patients with AJD diagnosed in the Department of Orthopedics，Suqian Hospital Affiliated to Xuzhou Medical University between March 2018 to March 2020 were included and categorized.The experimental group has 13 males and 11 females，including 10 casesof left and 14 cases ofthe right shoulders.The patients aged from 25 to 63 years old with an average age of (44.9±11.1) years old.Using Mimics，3D reconstruction and measurement of the healthy side AJD zone of α，β，γ angle and length of A-A' four parameters before operation were conducted.CHP personalized shaping was guided quantitatively.The control group has 10 males and 8 females，include 8 left and 10 right cases，which the age ranged from 23 to 62 years，with an average of (44.1±12.0) years.CHP was shaped by operators according to experience.Constan-Murley shoulder function score(C-MSF) and the numeric rating scale (NRS) were used to evaluate the shoulder function and pain respectively before and after the operation for both groups.Results There was no statistically significant difference in preoperative general conditions，C-MSF and NRS scores between the two groups.In experimental group，it was significantly lower in C-MSF and NRS scores than that of preoperative at 3 days after operation (P＜0.05).At 1，3，and 6 months after operation，the NRS scores of the two groups showed a significant decline compared with preoperative (P＜0.001).The experimental group had lower pain scores than control group (P＜0.05，P＜0.05，P＜0.05)，and the functional recovery of experimental group was more significant at 1，3，and 6 months respectively after surgery(P＜0.01，P＜0.01，P＜0.05).Conclusion The preoperative measurement of α，β and γ angles and length of A-A' using Mimics software can significantly reduce shoulder pain and promote the recovery of shoulder joint function after CHP surgery of AJD，which has important clinical value.

Key words： acromioclavicular joint dislocation clavicular hook plate personalized shaping mimics software

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