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- W4312178189 abstract "Abstract Background Two relatively common forms of injury exist in the posterior cruciate ligament (PCL) after the onset of trauma: PCL tear and tibial avulsion fracture. The mechanism for the occurrence of these different forms of injury is not known. Herein, we aimed to investigate this mechanism by comparing the intercondylar notch parameters between patients with PCL tears and those with PCL avulsion fractures of the tibial insertion. Methods Fifty-three patients with PCL tears (37 male, 16 female: median age of 37 years: range 18–54 years) and 46 patients with avulsion fractures of tibial insertion (33 male, 13 female: median age of 33 years: range 18–55 years) were included in this study. Three-dimensional computed tomography (CT) was applied to measure the intercondylar notch width index and intercondylar notch volume. The intercondylar notch volume was simulated as the truncated-pyramid shape. Measurements of the top and bottom areas of this model were conducted on the slice containing the most proximal ( S 1 ) and most distal ( S 2 ) levels of Blumensaat’s line. Femoral condyle height ( h ) was defined as the vertical distance between two parallel planes, and the volume was calculated as h ( S 1 + S 2 + √( S 1 S 2 ))/3. The values of S 1 , S 2 , h , notch volume, the body mass index (BMI), intercondylar notch width (NW), femoral condylar width (FW) and notch width index (NWI) were compared among the PCL tear and avulsion-fracture groups. Results The results show a significant difference in the S 2 and normalized intercondylar notch volumes among patients with PCL tears and tibial avulsion injuries. Patients with PCL tears have smaller S 2 and intercondylar notch volumes than those with tibial avulsion. There were no significant differences between the two groups in S 1 or the 2D notch measurement parameters, such as the NW, FW and NWI. In addition, logistic regression analysis revealed notch volume and body mass index (BMI) as two significant independent predictors for PCL tears. Conclusion Decreased intercondylar notch volume and increased BMI are associated with an increased incidence of PCL tears. The occurrence of PCL tears and tibial avulsion injuries is influenced by the femoral intercondylar notch volume, and the measurement of the notch volume could be useful for identifying patients at risk for PCL tears." @default.
- W4312178189 created "2023-01-04" @default.
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- W4312178189 date "2022-12-23" @default.
- W4312178189 modified "2023-09-26" @default.
- W4312178189 title "Intercondylar notch volume in patients with posterior cruciate ligament tears and tibial avulsion injuries: a study applying computed tomography" @default.
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- W4312178189 doi "https://doi.org/10.1186/s13018-022-03451-4" @default.
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