| ID | 63729 |
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| Author |
Okazaki, Yuki
Department of Orthopaedic Surgery, Okayama University Hospital
Kodama, Yuya
Department of Orthopaedic Surgery, Okayama University Hospital
Hiranaka, Takaaki
Department of Orthopaedic Surgery, Okayama University Hospital
Kintaka, Keisuke
Department of Orthopaedic Surgery, Okayama University Hospital
Kamatsuki, Yusuke
Department of Orthopaedic Surgery, Okayama University Hospital
Ozaki, Toshifumi
Department of Orthopaedic Surgery, Okayama University Hospital
Kaken ID
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| Abstract | Purpose Medial meniscus (MM) posterior root tears (PRTs) lead to abnormal kinematic changes in the knee and may induce pathological external rotation of the tibia during knee flexion. This study aimed to investigate changes in the length and inclination of the anterior cruciate ligament (ACL) after MM posterior root repair using magnetic resonance imaging (MRI).
Methods This retrospective study included 44 patients who underwent MM posterior root repair between 2016 and 2019. Clinical outcomes were evaluated before and after surgery. MRI examinations were performed at 10 degrees/90 degrees of knee flexion preoperatively and 3 months postoperatively. The ACL length, proximal angle, and distal angle were determined using the sagittal view. MM extrusion and ACL inclination angle were determined using the coronal view. Results Clinical outcomes significantly improved 1 year after surgery. The postoperative ACL length (29.7 +/- 2.4 mm) and proximal angle (47.0 +/- 7.4 degrees) at 90 degrees of knee flexion decreased relative to the preoperative values (31.5 +/- 2.3 mm and 51.8 +/- 8.7 degrees, P < 0.01). The postoperative ACL inclination (64.9 +/- 5.6 degrees) at 10 degrees of knee flexion decreased relative to the preoperative value (69.7 +/- 5.6 degrees, P < 0.01). Conclusion Pathologically-stretched linear ACL at 90 degrees of knee flexion and a steep ACL inclination at 10 degrees of knee flexion could be reduced after MM posterior root repair. This suggests that pullout repair could restore MM function as a secondary stabilizer, thereby preventing meniscal and cartilage degeneration. |
| Keywords | Anterior cruciate ligament
Coronal inclination
Knee kinematics
Magnetic resonance imaging
Medial meniscus
Posterior root tear
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| Note | This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/s00590-022-03285-0
This fulltext is available in May 2023. |
| Published Date | 2022-05-20
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| Publication Title |
European Journal of Orthopaedic Surgery and Traumatology
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| Volume | volume33
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| Issue | issue4
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| Publisher | Springer Science and Business Media LLC
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| Start Page | 1255
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| End Page | 1262
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| ISSN | 1432-1068
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| NCID | AA11622799
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| Content Type |
Journal Article
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| language |
English
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| OAI-PMH Set |
岡山大学
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| Copyright Holders | © The Author(s), under exclusive licence to Springer-Verlag France SAS, part of Springer Nature 2022
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| File Version | author
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| Related Url | isVersionOf https://doi.org/10.1007/s00590-022-03285-0
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| Citation | Okazaki, Y., Furumatsu, T., Kodama, Y. et al. Medial meniscus posterior root repair influences sagittal length and coronal inclination of the anterior cruciate ligament: a retrospective study. Eur J Orthop Surg Traumatol 33, 1255–1262 (2023). https://doi.org/10.1007/s00590-022-03285-0
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