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Graft bending angle of the reconstructed posterior cruciate ligament gradually decreases as knee flexion increases

Authors
 Min Jung  ;  Si Young Song  ;  Myoungsoo Cha  ;  Hyun-Min Chung  ;  Yoon Sang Kim  ;  Seong-Wook Jang  ;  Young-Jin Seo 
Citation
 KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY, Vol.28(8) : 2626-2633, 2020-08 
Journal Title
 KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY 
ISSN
 0942-2056 
Issue Date
2020-08
MeSH
Adult ; Femur / surgery ; Humans ; Imaging, Three-Dimensional ; Knee Joint / diagnostic imaging ; Knee Joint / physiology* ; Male ; Middle Aged ; Posterior Cruciate Ligament / diagnostic imaging ; Posterior Cruciate Ligament / injuries ; Posterior Cruciate Ligament / physiology* ; Posterior Cruciate Ligament / surgery* ; Posterior Cruciate Ligament Reconstruction / methods* ; Range of Motion, Articular ; Tibia / surgery ; Tomography, X-Ray Computed ; Transplants / diagnostic imaging ; Transplants / physiology*
Keywords
Graft bending angle ; Posterior cruciate ligament ; Reconstruction
Abstract
Purpose: The purpose of the study was to determine the change in the graft bending angles at the femoral and tibial tunnel aperture in single-bundle posterior cruciate ligament (PCL) reconstruction. It was hypothesized that different knee flexion and different tunnel directions may affect changes of the femoral and tibial graft bending angle. Methods: The right knees of 12 male subjects were scanned with a high-resolution computed tomography scanner at 4 different knee flexion angles (0°, 45°, 90° and 135°). To begin with, the 3D knee models were created and manipulated with the use of several modeling programs. Single-bundle PCL reconstruction was then virtually conducted in a 90° flexion model: The femoral and tibial graft bending angle, according to the various knee flexion angles, was calculated using a special software program. Results: The femoral graft bending angle significantly decreased as the knee flexion increased between 0° and 135° (all p < 0.001). The femoral graft bending angle of the AL graft showed the most obtuse angles among the three types of the graft beyond 45° of knee flexion. For the tibial graft bending angle, the anteromedial tunnel group showed significantly more acute tibial graft bending angle than the anterolateral tunnel group in all three types of the graft at all flexion angles (all p < 0.001). Conclusion: Changes in the femoral graft bending angle were generally affected by different knee flexion angles. The effect of tibial tunnel direction on the tibial graft bending angle was found to be significant. The clinical relevance is that a mostly obtuse femoral graft bending angle was shown by the AL graft among three types of the graft.
Full Text
https://link.springer.com/article/10.1007%2Fs00167-020-05899-5
DOI
10.1007/s00167-020-05899-5
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실) > 1. Journal Papers
Yonsei Authors
Jung, Min(정민) ORCID logo https://orcid.org/0000-0002-7527-4802
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/181421
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