Karademir Gokhan, Tunalı Onur, Atalar Ata Can
Department of Orthopedics and Traumatology, Acıbadem MAA University School of Medicine, Istanbul, Türkiye.
Department of Orthopedics and Traumatology, Acıbadem Maslak Hospital, Istanbul, Türkiye.
Acta Orthop Traumatol Turc. 2025 Apr 29;59(2):93-99. doi: 10.5152/j.aott.2025.24059.
Objective: Glenoid-version-measurement methods were initially defined for computed tomography (CT) but are now used for magnetic resonance imaging (MRI). However, their accuracy and reliability on MRI have not been thoroughly investigated. The aim was to determine the accuracy of these methods on MRI and compare their reliability, hypothesizing that MRI could provide accurate measurements similar to CT using all 3 methods, with the Matsumura method having the highest reliability. Methods: Glenoid-version measurements of 40 patients (14 female, 26 males; mean age 46.5 ± 17.9 years) with glenohumeral instability were performed using the Friedman, Poon and Ting, and Matsumura methods on MRI. These measurements were compared to those on 3-dimensional corrected slices of CT scans to evaluate accuracy. Reliability was assessed by 2 observers who repeated MRI measurements after 2 months. Results: All methods demonstrated favorable accuracy. The Friedman and Matsumura methods exhibited good interobserver reliability [intraclass correlation coefficient (ICC)=0.78 (0.58-0.88) and 0.89 (0.79-0.94)], while the Poon and Ting method showed moderate reliability [ICC=0.71 (0.44-0.84)]. Intraobserver reliability was excellent for the Matsumura method [Observer 1 ICC=0.96 (0.93-0.98), Observer 2 ICC=0.86 (0.95-0.99)], good for Friedman [Observer 1 ICC=0.77 (0.57-0.88), Observer 2 ICC=0.82 (0.67-0.91)], and moderate to good for Poon and Ting [Observer 1 ICC=0.68 (0.39-0.83), Observer 2 ICC=0.82 (0.65-0.9)]. Conclusion: All 3 methods can be used confidently for MRI measurements, matching the accuracy of CT scans. The Friedman and Matsumura methods demonstrated higher interobserver and intraobserver reliabilities. Level of evidence: Level III, diagnostic study.
关节盂版本测量方法最初是为计算机断层扫描（CT）定义的，但现在也用于磁共振成像（MRI）。然而，它们在MRI上的准确性和可靠性尚未得到充分研究。目的是确定这些方法在MRI上的准确性，并比较其可靠性，假设MRI可以使用所有三种方法提供与CT相似的准确测量，其中松村法具有最高的可靠性。方法：对40例肩肱关节不稳患者（14例女性，2例男性；平均年龄46.5±17.9岁）在MRI上采用弗里德曼法、潘和丁法以及松村法进行关节盂版本测量。将这些测量结果与CT扫描的三维校正切片上的测量结果进行比较，以评估准确性。由两名观察者在两个月后重复进行MRI测量来评估可靠性。结果：所有方法均显示出良好的准确性。弗里德曼法和松村法表现出良好的观察者间可靠性[组内相关系数（ICC）=0.78（0.58 - 0.88）和0.89（0.79 - 0.94）]，而潘和丁法显示出中等可靠性[ICC = 0.71（0.44 - 0.84）]。松村法的观察者内可靠性极佳[观察者1的ICC = 0.96（0.93 - 0.98），观察者2的ICC = 0.86（0.95 - 0.99）]，弗里德曼法良好[观察者1的ICC = 0.77（0.57 - 0.88），观察者2的ICC = 0.82（0.67 - 0.91）]，潘和丁法为中等至良好[观察者1的ICC = 0.68（0.39 - 0.83），观察者2的ICC = 0.82（0.65 - 0.9）]。结论：所有三种方法都可放心用于MRI测量，与CT扫描的准确性相当。弗里德曼法和松村法显示出更高的观察者间和观察者内可靠性。证据级别：III级，诊断性研究。
