Analysis of displacement and deformation of the medial meniscus with a horizontal tear using a three-dimensional computer model
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| 024 | 7 | 0 | |a 10.1007/s00167-014-2931-7 |2 doi |
| 035 | |a (NATIONALLICENCE)springer-10.1007/s00167-014-2931-7 | ||
| 245 | 0 | 0 | |a Analysis of displacement and deformation of the medial meniscus with a horizontal tear using a three-dimensional computer model |h [Elektronische Daten] |c [Hiroshi Amano, Takehiko Iwahashi, Tomoyuki Suzuki, Tatsuo Mae, Norimasa Nakamura, Kazuomi Sugamoto, Konsei Shino, Hideki Yoshikawa, Ken Nakata] |
| 520 | 3 | |a Purpose: The displacement and deformation of the knee meniscus significantly affect its roles; however, little is known about the displacement and deformation patterns of a torn medial meniscus. The objective of this study was to evaluate quantitatively the patterns of displacement and deformation in horizontally torn medial menisci during knee flexion. Methods: Twenty patients with horizontally torn medial menisci underwent three-dimensional (3-D) magnetic resonance imaging at varying degrees of knee flexion, and 3-D computer models of the tibia, tibial articular cartilage, and meniscus were generated. Based on these, the size of the horizontal tear (% tear) was evaluated and defined as the circumferential ratio between the length of the horizontal tear and that of the entire meniscus. The 3-D meniscus models were automatically superimposed over images taken at 0, 20, 40, and 60° of knee flexion by the voxel-based registration method. Meniscal motion and deformation during knee flexion were visualized and quantitatively calculated on the mid-sagittal plane. Correlations between the size of horizontal tear, displacement/deformation of torn menisci, and clinical symptoms were evaluated after conservative treatment for 3months. Results: The % tear was 35.7±12.5% (range 13.7-55.5%). During knee flexion, all torn menisci moved posteriorly, with gradual widening of horizontal and vertical gaps (p<0.05). A direct correlation was observed between % tear and change in the vertical tear gap during knee flexion (p<0.05). There was an inverse correlation between Lysholm score and % tear (p<0.05). Conclusion: Medial meniscal horizontal tears widen and deform during knee flexion, and % tear correlates with the change in the vertical gap. Patients with a lower % tear are more capable of performing activities of daily living after conservative treatment. This method may help clarify the cause of pain in patients with medial meniscus tears as well as facilitate the selection of an appropriate treatment plan. Level of evidence: Case series, Level IV. | |
| 540 | |a Springer-Verlag Berlin Heidelberg, 2014 | ||
| 690 | 7 | |a Horizontally torn medial meniscus |2 nationallicence | |
| 690 | 7 | |a MRI |2 nationallicence | |
| 690 | 7 | |a 3-D computer model |2 nationallicence | |
| 690 | 7 | |a Movement and deformation |2 nationallicence | |
| 700 | 1 | |a Amano |D Hiroshi |u Department of Sports Orthopedics, Osaka Rosai Hospital, 1179-3 Nagasone-cho, Kita-ku, 591-8025, Sakai, Osaka, Japan |4 aut | |
| 700 | 1 | |a Iwahashi |D Takehiko |u Department of Orthopedics, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, 565-0871, Suita, Osaka, Japan |4 aut | |
| 700 | 1 | |a Suzuki |D Tomoyuki |u Department of Orthopedic Surgery, Sapporo Medical University School of Medicine, S1-w16, Chu-ou-ku, 060-8543, Sapporo, Japan |4 aut | |
| 700 | 1 | |a Mae |D Tatsuo |u Department of Orthopedics, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, 565-0871, Suita, Osaka, Japan |4 aut | |
| 700 | 1 | |a Nakamura |D Norimasa |u Faculty of Rehabilitation Science, Osaka Health Science University, 1-9-27, Temma, Kita-ku, 530-0043, Osaka, Japan |4 aut | |
| 700 | 1 | |a Sugamoto |D Kazuomi |u Locomotor Biomaterial Limited to the Joint Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, 565-0871, Suita, Osaka, Japan |4 aut | |
| 700 | 1 | |a Shino |D Konsei |u Osaka Yukioka College of Health Science, 1-1-41, Sojiji, 567-0801, Ibaraki, Osaka, Japan |4 aut | |
| 700 | 1 | |a Yoshikawa |D Hideki |u Department of Orthopedics, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, 565-0871, Suita, Osaka, Japan |4 aut | |
| 700 | 1 | |a Nakata |D Ken |u Department of Health and Sport Sciences, Osaka University Graduate School of Medicine, 1-17, Machikaneyama, 560-0043, Toyonaka, Osaka, Japan |4 aut | |
| 773 | 0 | |t Knee Surgery, Sports Traumatology, Arthroscopy |d Springer Berlin Heidelberg |g 23/4(2015-04-01), 1153-1160 |x 0942-2056 |q 23:4<1153 |1 2015 |2 23 |o 167 | |
| 856 | 4 | 0 | |u https://doi.org/10.1007/s00167-014-2931-7 |q text/html |z Onlinezugriff via DOI |
| 898 | |a BK010053 |b XK010053 |c XK010000 | ||
| 900 | 7 | |a Metadata rights reserved |b Springer special CC-BY-NC licence |2 nationallicence | |
| 908 | |D 1 |a research-article |2 jats | ||
| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-springer | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1007/s00167-014-2931-7 |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Amano |D Hiroshi |u Department of Sports Orthopedics, Osaka Rosai Hospital, 1179-3 Nagasone-cho, Kita-ku, 591-8025, Sakai, Osaka, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Iwahashi |D Takehiko |u Department of Orthopedics, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, 565-0871, Suita, Osaka, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Suzuki |D Tomoyuki |u Department of Orthopedic Surgery, Sapporo Medical University School of Medicine, S1-w16, Chu-ou-ku, 060-8543, Sapporo, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Mae |D Tatsuo |u Department of Orthopedics, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, 565-0871, Suita, Osaka, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Nakamura |D Norimasa |u Faculty of Rehabilitation Science, Osaka Health Science University, 1-9-27, Temma, Kita-ku, 530-0043, Osaka, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Sugamoto |D Kazuomi |u Locomotor Biomaterial Limited to the Joint Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, 565-0871, Suita, Osaka, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Shino |D Konsei |u Osaka Yukioka College of Health Science, 1-1-41, Sojiji, 567-0801, Ibaraki, Osaka, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Yoshikawa |D Hideki |u Department of Orthopedics, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, 565-0871, Suita, Osaka, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Nakata |D Ken |u Department of Health and Sport Sciences, Osaka University Graduate School of Medicine, 1-17, Machikaneyama, 560-0043, Toyonaka, Osaka, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Knee Surgery, Sports Traumatology, Arthroscopy |d Springer Berlin Heidelberg |g 23/4(2015-04-01), 1153-1160 |x 0942-2056 |q 23:4<1153 |1 2015 |2 23 |o 167 | ||