High tibial osteotomy for medial meniscus posterior root tears in knees with moderate varus alignment can achieve favorable clinical outcomes

Abstract Purpose Favorable clinical results have been reported following high tibial osteotomy (HTO) for medial meniscus posterior root tear (MMPRT) in knees with varus alignment. However, the effect on the preoperative neutral alignment of the knee is not known. This study sought to evaluate the cl...

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Main Authors: Junya Itou, Umito Kuwashima, Masafumi Itoh, Ken Okazaki
Format: Article
Language:English
Published: Wiley 2022-01-01
Series:Journal of Experimental Orthopaedics
Subjects:
Online Access:https://doi.org/10.1186/s40634-022-00504-9
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author Junya Itou
Umito Kuwashima
Masafumi Itoh
Ken Okazaki
author_facet Junya Itou
Umito Kuwashima
Masafumi Itoh
Ken Okazaki
author_sort Junya Itou
collection DOAJ
description Abstract Purpose Favorable clinical results have been reported following high tibial osteotomy (HTO) for medial meniscus posterior root tear (MMPRT) in knees with varus alignment. However, the effect on the preoperative neutral alignment of the knee is not known. This study sought to evaluate the clinical outcomes of medial open‐wedge HTO for MMPRT with neutral alignment. Methods We retrospectively reviewed 119 medial open‐wedge HTOs and analyzed 22 knees with MMPRT. The knees were divided according to the preoperative hip‐knee‐ankle angle into a moderate varus alignment group (≤4° of varus alignment) and a varus alignment group (> 4° of varus alignment). The Knee Injury and Osteoarthritis Outcome Score (KOOS) and Forgotten Joint Score‐12 (FJS‐12) values were evaluated preoperatively and at the latest follow‐up. The healing status of MMPRT at the time of second‐look arthroscopy, performed at a mean of 15.4 ± 4.2 months, was compared with that after the primary HTO. Results There were 11 knees in the moderate varus alignment group and 11 in the varus alignment group. In terms of perioperative patient‐reported outcome measures, there was no significant difference in the preoperative or postoperative KOOS subscale score or FJS‐12 score between the moderate varus and varus alignment groups. The healing rate was significantly higher in the moderate varus alignment group. Conclusion Favorable clinical results were obtained by medial open‐wedge HTO in knees with MMPRT and moderate varus alignment in the short term. Surgeons should consider the indications for medial open‐wedge HTO, even with moderate varus alignment, when planning treatment for MMPRT with persistent knee pain. Level of evidence IV
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spelling doaj.art-63045441bc1743c689ed6eff8ac658c92024-02-07T14:50:37ZengWileyJournal of Experimental Orthopaedics2197-11532022-01-0191n/an/a10.1186/s40634-022-00504-9High tibial osteotomy for medial meniscus posterior root tears in knees with moderate varus alignment can achieve favorable clinical outcomesJunya Itou0Umito Kuwashima1Masafumi Itoh2Ken Okazaki3Department of Orthopaedic SurgeryTokyo Women’s Medical University8‐1 Kawada‐cho, Shinjuku‐ku162‐8666TokyoJapanDepartment of Orthopaedic SurgeryTokyo Women’s Medical University8‐1 Kawada‐cho, Shinjuku‐ku162‐8666TokyoJapanDepartment of Orthopaedic SurgeryTokyo Women’s Medical University8‐1 Kawada‐cho, Shinjuku‐ku162‐8666TokyoJapanDepartment of Orthopaedic SurgeryTokyo Women’s Medical University8‐1 Kawada‐cho, Shinjuku‐ku162‐8666TokyoJapanAbstract Purpose Favorable clinical results have been reported following high tibial osteotomy (HTO) for medial meniscus posterior root tear (MMPRT) in knees with varus alignment. However, the effect on the preoperative neutral alignment of the knee is not known. This study sought to evaluate the clinical outcomes of medial open‐wedge HTO for MMPRT with neutral alignment. Methods We retrospectively reviewed 119 medial open‐wedge HTOs and analyzed 22 knees with MMPRT. The knees were divided according to the preoperative hip‐knee‐ankle angle into a moderate varus alignment group (≤4° of varus alignment) and a varus alignment group (> 4° of varus alignment). The Knee Injury and Osteoarthritis Outcome Score (KOOS) and Forgotten Joint Score‐12 (FJS‐12) values were evaluated preoperatively and at the latest follow‐up. The healing status of MMPRT at the time of second‐look arthroscopy, performed at a mean of 15.4 ± 4.2 months, was compared with that after the primary HTO. Results There were 11 knees in the moderate varus alignment group and 11 in the varus alignment group. In terms of perioperative patient‐reported outcome measures, there was no significant difference in the preoperative or postoperative KOOS subscale score or FJS‐12 score between the moderate varus and varus alignment groups. The healing rate was significantly higher in the moderate varus alignment group. Conclusion Favorable clinical results were obtained by medial open‐wedge HTO in knees with MMPRT and moderate varus alignment in the short term. Surgeons should consider the indications for medial open‐wedge HTO, even with moderate varus alignment, when planning treatment for MMPRT with persistent knee pain. Level of evidence IVhttps://doi.org/10.1186/s40634-022-00504-9Medial meniscus posterior root tearHigh tibial osteotomyPatient‐reported outcome measuresModerate varus alignment
spellingShingle Junya Itou
Umito Kuwashima
Masafumi Itoh
Ken Okazaki
High tibial osteotomy for medial meniscus posterior root tears in knees with moderate varus alignment can achieve favorable clinical outcomes
Journal of Experimental Orthopaedics
Medial meniscus posterior root tear
High tibial osteotomy
Patient‐reported outcome measures
Moderate varus alignment
title High tibial osteotomy for medial meniscus posterior root tears in knees with moderate varus alignment can achieve favorable clinical outcomes
title_full High tibial osteotomy for medial meniscus posterior root tears in knees with moderate varus alignment can achieve favorable clinical outcomes
title_fullStr High tibial osteotomy for medial meniscus posterior root tears in knees with moderate varus alignment can achieve favorable clinical outcomes
title_full_unstemmed High tibial osteotomy for medial meniscus posterior root tears in knees with moderate varus alignment can achieve favorable clinical outcomes
title_short High tibial osteotomy for medial meniscus posterior root tears in knees with moderate varus alignment can achieve favorable clinical outcomes
title_sort high tibial osteotomy for medial meniscus posterior root tears in knees with moderate varus alignment can achieve favorable clinical outcomes
topic Medial meniscus posterior root tear
High tibial osteotomy
Patient‐reported outcome measures
Moderate varus alignment
url https://doi.org/10.1186/s40634-022-00504-9
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