Accurate localization and removal of deeply imbedded metallic foreign bodies in human limbs assisted by positioning device

Su Weiwei, He Zaopeng, Zhang Guodong, Li Wei, Xu Jing, Liao Zhengwen, Xie Pusheng, Lin Dongxin, Huang Wenhua

Chinese Journal of Clinical Anatomy ›› 2021, Vol. 39 ›› Issue (2) : 148-153.

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Chinese Journal of Clinical Anatomy ›› 2021, Vol. 39 ›› Issue (2) : 148-153. DOI: 10.13418/j.issn.1001-165x.2021.02.007

Accurate localization and removal of deeply imbedded metallic foreign bodies in human limbs assisted by positioning device

  • Su Weiwei1,2, He Zaopeng1,2, Zhang Guodong2, Li Wei3, Xu Jing4, Liao Zhengwen5, Xie Pusheng1, Lin Dongxin2, Huang Wenhua1,2
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Abstract

Objective To explore the application of the new positioning device on the accurate localization and removal surgery of deeply imbedded metallic foreign bodies. Methods Ten human limb specimens were used and 65 metal balls with a diameter of 2.0 mm were inserted. This experiment was divided into an experimental group, which was the actual locating result of the 65 cases of foreign bodies, and a control group, which was the theoretical optimal locating result of the 65 cases of foreign bodies. After localization with assistance of the locating device, a thin layer CT scan and 3D reconstruction were performed to measure the positioning deviation distance (D1). The qualified positioning numbers of different accuracy levels was counted. The chi square test was performed to obtain the positioning accuracy of the locating device and the fluoroscopy time (T1) and removal time of the foreign body (T2) were recorded. Results All 65 metallic foreign bodies were located and removed precisely, with mean T1: 46.06±18.44 seconds and T2: 177.10±65.87 seconds. The location accuracy of this device was 2.3mm. Conclusions With the aid of this positioning device, the precise localization and removal of deeply embedded metallic foreign bodies in human limbs can be achieved.

Key words

Retained metallic foreign body /  Precise positioning /  3D printing /  Fluoroscopy

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Su Weiwei, He Zaopeng, Zhang Guodong, Li Wei, Xu Jing, Liao Zhengwen, Xie Pusheng, Lin Dongxin, Huang Wenhua. Accurate localization and removal of deeply imbedded metallic foreign bodies in human limbs assisted by positioning device[J]. Chinese Journal of Clinical Anatomy. 2021, 39(2): 148-153 https://doi.org/10.13418/j.issn.1001-165x.2021.02.007

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