Noninvasive treatment of pectus excavatum with a vacuum bell combined with a three-dimensional scanner
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ORIGINAL ARTICLE
Noninvasive treatment of pectus excavatum with a vacuum bell combined with a three‑dimensional scanner Yue Gao1 · Jan‑hua Li1 · Jan‑gen Yu1 · Zheng Tan1 · Liang Liang1 · Ting Huang1 · Xu Han2 · Zhuo Shi1 · Qiang Shu1 Accepted: 1 August 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Purpose Our aim was to evaluate the effect of a vacuum bell (VB) combined with a three-dimensional (3D) scanner for the noninvasive treatment of pectus excavatum (PE). Methods A VB was used to create a vacuum at the anterior chest wall with a patient-activated hand pump, and it should be applied regularly for more than 2 h each day at home. Eighty-two patients required to be followed up every three months were included in this retrospective study and distributed into four stages (stage 1: treated for 3 months, stage 2: treated for 6 months, stage 3: treated for 9 months, and stage 4: treated for 12 months). In addition, the deformity in the chest wall was scanned by a 3D scanner at the clinic, and the 3D depth (3D-DE) and 3D Haller index (3D-HI) of PE were calculated through Geomagic studio 2013 software. Results Eighty-two patients (12/2017–12/2019) met the criteria at the clinic, and 24 patients (29.3%) achieved excellent correction (3D-DE ≤ 3 mm). When comparing the improvement in 3D-DE and 3D-HI of PE to the patient’s treatment time, a statistically significant difference was observed between stages 2 and 1 (3D-DE p
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