Arthroscopic surgery for symptomatic discoid lateral meniscus improves meniscal status assessed by magnetic resonance imaging T2 mapping

被引：5

作者：

Nishino, Kazuya ^{[1
]}

Hashimoto, Yusuke ^{[2
]}

Nishida, Yohei ^{[3
]}

Yamasaki, Shinya ^{[4
]}

Nakamura, Hiroaki ^{[2
]}

机构：

[1] Osaka City Univ, Dept Orthopaed Surg, Grad Sch Med, 1-4-3 Asahi Machi,Abeno Ku, Osaka 5458585, Japan

[2] Osaka Metropolitan Univ, Dept Orthopaed Surg, Grad Sch Med, Osaka, Japan

[3] Saiseikai Nakatsu Hosp, Dept Orthopaed Surg, Osaka, Japan

[4] Osaka City Gen Hosp, Dept Orthopaed Surg, Osaka, Japan

来源：

ARCHIVES OF ORTHOPAEDIC AND TRAUMA SURGERY | 2023年 / 143卷 / 08期

关键词：

MRI; T2; mapping; Discoid lateral meniscus; Saucerization; Reshaping surgery; TERM-FOLLOW-UP; ARTICULAR-CARTILAGE; PARTIAL MENISCECTOMY; RELAXATION-TIMES; QUANTITATIVE MRI; HEALTHY-SUBJECTS; RISK-FACTORS; KNEE; CHILDREN; DIAGNOSIS;

D O I：

10.1007/s00402-023-04819-9

中图分类号：

R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学（修复外科学）];

学科分类号：

摘要：

IntroductionDiscoid lateral meniscus (DLM) is an anatomic knee variant associated with increased tears and degeneration. This study aimed to quantify meniscal status with magnetic resonance imaging (MRI) T2 mapping before and after arthroscopic reshaping surgery for DLM.Materials and methodsWe retrospectively reviewed the records of patients undergoing arthroscopic reshaping surgery for symptomatic DLM with >= 2-year follow-up. MRI T2 mapping was performed preoperatively and at 12 and 24 months postoperatively. T2 relaxation times of the anterior and posterior horns of both menisci and of the adjacent cartilage were assessed.ResultsThirty-six knees from 32 patients were included. The mean age at surgery was 13.7 years (range 7-24), and the mean follow-up duration was 31.0 months. Saucerization alone was performed on five knees and saucerization with repair on 31 knees. Preoperatively, the T2 relaxation time of the anterior horn of the lateral meniscus was significantly longer than that of the medial meniscus (P < 0.01). T2 relaxation time significantly decreased at 12 and 24 months postoperatively (P < 0.01). Assessments of the posterior horn were comparable. The T2 relaxation time was significantly longer in the tear versus non-tear side at each time point (P < 0.01). There were significant correlations between the T2 relaxation time of the meniscus and that of the corresponding area of the lateral femoral condyle cartilage (anterior horn: r = 0.504, P = 0.002; posterior horn: r = 0.365, P = 0.029).ConclusionsThe T2 relaxation time of symptomatic DLM was significantly longer than that of the medial meniscus preoperatively, and it decreased 24 months after arthroscopic reshaping surgery. The meniscal T2 relaxation time of the tear side was significantly longer than that of the non-tear side. There were significant correlations between the cartilage and meniscal T2 relaxation times at 24 months after surgery.

引用

页码：4889 / 4897

页数：9

共 55 条

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