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Journal of Zhejiang University SCIENCE B 2021 Vol.22 No.10 P.866-875


3D-printed models improve surgical planning for correction of severe postburn ankle contracture with an external fixator

Author(s):  Youbai CHEN, Zehao NIU, Weiqian JIANG, Ran TAO, Yonghong LEI, Lingli GUO, Kexue ZHANG, Wensen XIA, Baoqiang SONG, Luyu HUANG, Qixu ZHANG, Yan HAN

Affiliation(s):  Department of Plastic and Reconstructive Surgery, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China; more

Corresponding email(s):   13720086335@163.com

Key Words:  Ankle contracture, Ilizarov, Postburn contracture, 3D printing, Surgical planning

Youbai CHEN, Zehao NIU, Weiqian JIANG, Ran TAO, Yonghong LEI, Lingli GUO, Kexue ZHANG, Wensen XIA, Baoqiang SONG, Luyu HUANG, Qixu ZHANG, Yan HAN. 3D-printed models improve surgical planning for correction of severe postburn ankle contracture with an external fixator[J]. Journal of Zhejiang University Science B, 2021, 22(10): 866-875.

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author="Youbai CHEN, Zehao NIU, Weiqian JIANG, Ran TAO, Yonghong LEI, Lingli GUO, Kexue ZHANG, Wensen XIA, Baoqiang SONG, Luyu HUANG, Qixu ZHANG, Yan HAN",
journal="Journal of Zhejiang University Science B",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T 3D-printed models improve surgical planning for correction of severe postburn ankle contracture with an external fixator
%A Youbai CHEN
%A Zehao NIU
%A Weiqian JIANG
%A Ran TAO
%A Yonghong LEI
%A Lingli GUO
%A Kexue ZHANG
%A Wensen XIA
%A Baoqiang SONG
%A Yan HAN
%J Journal of Zhejiang University SCIENCE B
%V 22
%N 10
%P 866-875
%@ 1673-1581
%D 2021
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.B2000576

T1 - 3D-printed models improve surgical planning for correction of severe postburn ankle contracture with an external fixator
A1 - Youbai CHEN
A1 - Zehao NIU
A1 - Weiqian JIANG
A1 - Ran TAO
A1 - Yonghong LEI
A1 - Lingli GUO
A1 - Kexue ZHANG
A1 - Wensen XIA
A1 - Baoqiang SONG
A1 - Luyu HUANG
A1 - Qixu ZHANG
A1 - Yan HAN
J0 - Journal of Zhejiang University Science B
VL - 22
IS - 10
SP - 866
EP - 875
%@ 1673-1581
Y1 - 2021
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.B2000576

Gradual distraction with an external fixator is a widely used treatment for severe postburn ankle contracture (SPAC). However, application of external fixators is complex, and conventional two-dimensional (2D) imaging-based surgical planning is not particularly helpful due to a lack of spatial geometry. The purpose of this study was to evaluate the surgical planning process for this procedure with patient-specific three-dimension-printed models (3DPMs). In this study, patients coming from two centers were divided into two cohorts (3DPM group vs. control group) depending on whether a 3DPM was used for preoperative surgical planning. Operation duration, improvement in metatarsal-tibial angle (MTA), range of motion (ROM), the American Orthopedic Foot and Ankle Society (AOFAS) scores, complications, and patient-reported satisfaction were compared between two groups. The 3DPM group had significantly shorter operation duration than the control group ((2.0±0.3) h vs. (3.2±0.3) h, P<0.01). MTA, ROM, and AOFAS scores between the two groups showed no significant differences pre-operation, after the removal of the external fixator, or at follow-up. Plantigrade feet were achieved and gait was substantially improved in all patients at the final follow-up. Pin-tract infections occurred in two patients (one in each group) during distraction and were treated with wound care and oral antibiotics. Patients in the 3DPM group reported higher satisfaction than those in the control group, owing to better patient-surgeon communication. surgical planning using patient-specific 3DPMs significantly reduced operation duration and increased patient satisfaction, while providing similar improvements in ankle movement and function compared to traditional surgical planning for the correction of SPAC with external fixators.


方法:本研究纳入了来自解放军总医院第一医学中心和空军军医大学第一附属医院的10名患者。根据术前是否使用3D打印模型进行手术设计,将患者分为两组(3D打印模型组和传统手术组)。研究的主要结局指标是手术时间。其他结局指标包括跖胫骨角(MTA)、踝关节活动范围(ROM)、美国骨科足踝协会评分(AOFAS scores)、并发症和患者满意度。


Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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