锥形束CT扫描上的内侧间隙容积可对尸体模型中旋后外旋型踝关节骨折的匹配度进行客观测量。
Medial clear space volume on cone beam CT scan offers objective measurement of congruency in supination external rotation ankle fractures in a cadaver model.
作者信息
Lawlor Mark C, Zimmer Zachary, Kluczynski Melissa A, Marzo John M
机构信息
Department of Orthopaedics, The Jacobs School of Medicine and Biomedical Sciences, The State University of New York, University at Buffalo, Buffalo, NY, USA.
出版信息
Quant Imaging Med Surg. 2020 Feb;10(2):380-388. doi: 10.21037/qims.2019.12.08.
BACKGROUND
We performed a volume analysis of gravity stress (GS) and simulated weight bearing (WB) CBCT scans of a cadaveric supination external rotation (SER) ankle fracture model.
METHODS
An AO supination external rotation 44B3.1 ankle fracture was simulated in 6 human cadavers, each serving as its own control. MCS volume (mm) was measured on GS and WB CBCT scans. Paired t-tests were used to compare the MCS volume for control versus experimental conditions for GS and WB conditions, and means ± standard deviation are presented.
RESULTS
MCS on GS CBCT was greater for the experimental (1,540.15±374.8) versus control (984.5±226.5) groups (P=0.004), and MCS on WB CBCT was also greater for the experimental (1,225.57±274.1) versus control (1,059.40±266.6) groups (P=0.05). MCS on GS CBCT was greater for the experimental group compared to both WB CBCT controls (P=0.005) and WB CBCT experimental group (P=0.04). Additionally, MCS on WB CBCT was greater for the experimental group compared to GS CBCT controls (P=0.002), however there was no statistically significant difference in MCS on GS CBCT for controls versus WB CBCT for controls (P=0.08).
CONCLUSIONS
MCS volume increased on WB CBCT scans using a cadaveric SER ankle fracture model.
背景
我们对一具尸体旋后外旋（SER）踝关节骨折模型的重力应力（GS）和模拟负重（WB）CBCT扫描进行了容积分析。
方法
在6具人类尸体上模拟AO旋后外旋44B3.1踝关节骨折，每具尸体自身作为对照。在GS和WB CBCT扫描上测量MCS容积（mm）。采用配对t检验比较GS和WB条件下对照与实验条件的MCS容积，并给出均值±标准差。
结果
实验（1,540.15±374.8）组与对照（984.5±226.5）组相比，GS CBCT上的MCS更大（P = 0.004），实验（1,225.57±274.1）组与对照（1,059.40±266.6）组相比，WB CBCT上的MCS也更大（P = 0.05）。与WB CBCT对照组（P = 0.005）和WB CBCT实验组（P = 0.04）相比，实验组在GS CBCT上的MCS更大。此外，与GS CBCT对照组相比，实验组在WB CBCT上的MCS更大（P = 0.002），然而，对照组在GS CBCT上的MCS与对照组在WB CBCT上的MCS无统计学显著差异（P = 0.08）。
结论
使用尸体SER踝关节骨折模型时，WB CBCT扫描上的MCS容积增加。
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