3dMD photogrammetric system study of thoracic deformation after multi-rib autologous rib cartilage transplantation for auricle reconstruction
10.3760/cma.j.cn114453-20240611-00153
- VernacularTitle:基于3dMD动态表面捕捉系统的多根肋软骨采取术后胸廓形变特征分析
- Author:
Shuang WANG
1
;
Leren HE
;
Hengyuan MA
;
Binghang LI
;
Dongwen JIANG
;
Chenhao MA
Author Information
1. 首都医科大学附属北京同仁医院整形美容中心，北京 100730
- Keywords:
Congenital microtia;
Auricle reconstruction;
Thoracic deformation;
Three-dimensional reconstruction;
3dMD photogrammetric system
- From:
Chinese Journal of Plastic Surgery
2024;40(10):1080-1085
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To analyze the characteristics of postoperative thoracic deformation in patients who underwent multi-rib autologous rib cartilage transplantation auricle reconstruction based on 3dMD imaging system.Methods:A retrospective study was conducted using 3dMD data of the thorax from patients who underwent auricle reconstruction surgery using multiple autologous costal cartilages at the First Department of Ear Reconstruction of the Plastic Surgery Hospital, Chinese Academy of Medical Sciences, from July to September 2019. The normal-side chest wall image was superimposed on the rib-harvested side chest wall for automatic registration and alignment, with distance numerical data presented in a Cartesian heat map through color mapping technology. By observing the areas where the rib-harvested side thorax had obvious deformation, the distance difference of the concave and convex peaks on the sagittal diameter was measured to judge the degree of thoracic deformation in children (≤10 mm as none; >10-20 mm as mild; >20-30 mm as moderate; >30 mm as severe).Results:A total of 42 children were included, with 27 males and 15 females, aged from 7 to 12 years old. The Cartesian heat map of thoracic deformation showed that the obvious concave area of the chest wall was located at the junction of the middle and inner one-third of the clavicle and the 7th rib, and the obvious convex area was located in the area from the nipple to the 5th rib. The measurement range of the protrusion peak in the upper chest nipple area was from -7.638 9 to -14.288 4 mm; the measurement range of the depression peak in the rib arch area was from 7.238 7 to 14.653 2 mm. The range of the distance difference between the concave and convex peaks was from 14.877 6 to 28.941 6 mm.The degree and incidence of thoracic deformation in children: mild in 5 cases; moderate in 37 cases.Conclusion:Based on the analysis with 3dMD photogrammetry, the overall characteristics of chest wall deformation in patients who underwent ear reconstruction with autologous rib cartilage grafts were the coexistence of protrusion in the upper chest nipple area and depression in the area where the rib cartilage was harvested, with changes occurring on the sagittal diameter.
