T2 mapping of cartilage and menisci at 3T in healthy subjects with knee malalignment: Initial experience

Journal article


Zhu, Jiangtao, Hu, Ningfan, Liang, Xiaoyun, Li, Xiaojing, Guan, Jian, Wang, Yajuan and Wang, Ligong. (2019) T2 mapping of cartilage and menisci at 3T in healthy subjects with knee malalignment: Initial experience. Skeletal Radiology. 48(5), pp. 753 - 763. https://doi.org/10.1007/s00256-019-3164-0
AuthorsZhu, Jiangtao, Hu, Ningfan, Liang, Xiaoyun, Li, Xiaojing, Guan, Jian, Wang, Yajuan and Wang, Ligong
Abstract

Purpose To assess the relationship between knee alignment and T2 values of femorotibial cartilage and menisci in healthy subjects at 3 T. Materials and methods Thirty-six healthy subjects divided into three subgroups of 12 neutral, 12 varus, and 12 valgus alignment of the femorotibial joint were investigated on 3-T MR scanner using a 2D multi-echo turbo spin-echo (TSE) sequence for T2 mapping. Wilcoxon signed-rank test and analysis of covariance (ANCOVA) were performed to determine any statistically significant differences in subregional T2 values of femorotibial cartilage and menisci among the three subgroups of healthy subjects. Results Lateral femoral anterior cartilage subregion (52 ± 3 ms, mean ± standard deviation; 53 ± 2 ms) had significantly higher T2 values (p < 0.05) than medial femoral anterior cartilage subregion (51 ± 2 ms; 51 ± 2 ms) in varus and valgus groups, respectively. There were statistically significant differences (p < 0.05) in T2 values of tibial central cartilage subregion between lateral and medical compartment among varus, valgus, and neutral subgroups. Lateral body segment of meniscus (41 ± 3 ms) had significantly higher (p < 0.05) T2 values than medial body segment (40 ± 2 ms) in the varus subgroup. Conclusions Some degree of correlation between knee alignment and subregional T2 values of femorotibial cartilage and menisci exists in healthy subjects. These findings indicate that T2 mapping may be sensitive in assessing the load distribution pattern of human cartilage and menisci with knee alignment abnormality, which may be used as reference baseline when understanding the occurrence and progression of knee osteoarthritis.

Keywordscartilage; meniscus; T2 mapping; alignment; osteoarthritis
Year2019
JournalSkeletal Radiology
Journal citation48 (5), pp. 753 - 763
PublisherSpringer
ISSN0364-2348
Digital Object Identifier (DOI)https://doi.org/10.1007/s00256-019-3164-0
Scopus EID2-s2.0-85061055688
Page range753 - 763
Research GroupMary MacKillop Institute for Health Research
Place of publicationGermany
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