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Knee Surgery, Sports Traumatology, Arthroscopy

Published in:

01-04-2021 | KNEE

Steep medial tibial slope and prolonged delay to surgery are associated with bilateral medial meniscus posterior root tear

Authors: Takaaki Hiranaka, Takayuki Furumatsu, Yuki Okazaki, Tadashi Yamawaki, Yoshiki Okazaki, Yuya Kodama, Yusuke Kamatsuki, Toshifumi Ozaki

Published in: Knee Surgery, Sports Traumatology, Arthroscopy | Issue 4/2021

Abstract

Purpose

Contralateral medial meniscus posterior root tear (MMPRT) can sometimes occur after primary surgeries for MMPRT and lead to unsatisfactory outcomes. The incidence rate and risk factors for contralateral MMPRT have not been well investigated, despite their clinical importance. Therefore, the incidence and predictors of bilateral MMPRT were aimed to be evaluated.

Methods

Fourteen patients with bilateral MMPRT (group B) and 169 patients with unilateral MMPRT (group U) were enrolled in this study. Sex, age, body mass index, time between injury and surgery, and medial tibial slope angle (MTSA) were compared between the groups. MTSA was measured using lateral radiographs.

Results

The incidence rate of bilateral MMPRT was 6.2% among all patients with MMPRTs. Multivariate logistic regression analysis showed that a prolonged time between injury and surgery (odds ratio [OR], 1.0; 95% confidence interval [CI] 1.00–1.01; P < 0.05) and steeper MTSA (OR, 1.85; 95% CI 1.21–2.64; P < 0.01) were significantly associated with the development of bilateral MMPRT. Receiver operating characteristic curve analysis showed that MTSA > 10.0° was associated with bilateral MMPRT, with a sensitivity of 93% and specificity of 69%.

Conclusion

A longer time between injury and surgery and steeper MTSA were risk factors for the development of bilateral MMPRT. Surgeons need to pay close attention to the contralateral knee in addition to the primary injured knees when treating knees with steep MTSA. Besides, early meniscal repair of primary MMPRT would be important to prevent the events of contralateral MMPRT.

Level of evidence

III.

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Title: Steep medial tibial slope and prolonged delay to surgery are associated with bilateral medial meniscus posterior root tear
Authors: Takaaki Hiranaka
Takayuki Furumatsu
Yuki Okazaki
Tadashi Yamawaki
Yoshiki Okazaki
Yuya Kodama
Yusuke Kamatsuki
Toshifumi Ozaki
Publication date: 01-04-2021
Publisher: Springer Berlin Heidelberg
Published in: Knee Surgery, Sports Traumatology, Arthroscopy / Issue 4/2021
Print ISSN: 0942-2056
Electronic ISSN: 1433-7347
DOI: https://doi.org/10.1007/s00167-020-06079-1

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Steep medial tibial slope and prolonged delay to surgery are associated with bilateral medial meniscus posterior root tear

Abstract

Purpose

Methods

Results

Conclusion

Level of evidence

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusion

Level of evidence

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