Three-dimensional CT fracture mapping for morphological characterization of geriatric pelvic fractures
10.3760/cma.j.cn115530-20220627-00337
- VernacularTitle:基于CT三维重建骨折地图技术分析老年人骨盆骨折的特点
- Author:
Peng LU
1
;
Jianzheng ZHANG
;
Hongying HE
;
Hao WANG
;
Shaoguang LI
;
Tiansheng SUN
Author Information
1. 解放军医学院，北京 100039
- Keywords:
Pelvis;
Fractures, bone;
Osteoporosis;
Fracture mapping;
Aged
- From:
Chinese Journal of Orthopaedic Trauma
2022;24(12):1030-1035
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To characterize the geriatric osteoporotic pelvic fractures using 3-D computed tomography (CT) fracture mapping.Methods:Retrospectively analyzed were the 79 elderly patients with pelvic fracture who had been admitted to Department of Orthopaedics, The 7th Medical Center of PLA General Hospital between January 2017 and December 2021. There were 24 men and 55 women, aged from 60 to 98 years (average, 74.3 years). The CT scan data of the pelvis from all patients were imported into the software (Mimics Medical 18.0, Geomagic Studio 2014, Rhinoceros 6.0, and Matlab) to create a 3-D pelvic fracture model. The fracture pieces were imported into a standard pelvic template to obtain the morphology of the fracture lines after fitting. A map of fracture line distribution frequency and a fracture heat map were created by fitting the fracture lines of all patients into a common pelvic template.Results:Of the 79 elderly patients with pelvic fracture, 69 (87.3%) had fractures of both the anterior and the posterior rings. The fracture map and heat map of geriatric pelvic fractures showed the following: the fracture lines of the anterior ring were concentrated in the junction of the cancellous bone and cortical bone of the superior and inferior pubic rami; the fracture lines of the posterior ring were concentrated in the middle and posterior 1/3 of the ilium and in the sacral wing; the fracture frequencies incurred by the pubic bone, sacrum, and ilium were from the highest to the lowest.Conclusions:Fracture mapping can visually characterize the distribution of fracture lines of the geriatric pelvic fractures. Simultaneous fractures of the anterior and posterior rings of the pelvis are the most typical kind of pelvic fractures in the elderly. The junction of the cancellous and cortical bones of the superior and inferior pubic rami and the area surrounding the sacroiliac joint are the most frequent locations for the fractures.
