Lawlor Mark C, Zimmer Zachary, Kluczynski Melissa A, Marzo John M
Department of Orthopaedics, The Jacobs School of Medicine and Biomedical Sciences, The State University of New York, University at Buffalo, Buffalo, NY, USA.
Quant Imaging Med Surg. 2020 Feb;10(2):380-388. doi: 10.21037/qims.2019.12.08.
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.
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.
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).
MCS volume increased on WB CBCT scans using a cadaveric SER ankle fracture model.
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。
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。
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）。
使用尸体SER踝关节骨折模型时，WB CBCT扫描上的MCS容积增加。
