Quantitative study of T2*mapping on knee joint cartilage and subchondral bone of new recruits before and after intensive training
10.3969/j.issn.1002-1671.2024.05.022
- VernacularTitle:T2*mapping对新兵奔袭集训前后膝关节软骨及软骨下骨的量化研究
- Author:
Wei SONG
1
,
2
;
Yu ZHANG
;
Xiao WANG
;
Qian ZHANG
;
Deli TAN
;
Xiangwei LUO
;
Yinfeng QIAN
Author Information
1. 安徽医科大学第一附属医院放射科,安徽 合肥 230022
2. 中国人民解放军联勤保障部队第九○一医院放射科,安徽 合肥 230031
- Keywords:
knee joint;
cartilage;
subchondral bone;
magnetic resonance imaging
- From:
Journal of Practical Radiology
2024;40(5):776-780
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the value of T2*mapping in quantitatively evaluate changes in knee joint cartilage and subchon-dral bone of new recruits before and after intensive training.Methods MRI scans of the right knee joint were performed three times on 20 new recruits:before intensive training,after one week of intensive training,and after one month of rest.The knee joint cartilage was divided into six regions:lateral femur(LF),medial femur(MF),lateral tibia(LT),medial tibia(MT),patella cartilage(PC),and trochlea cartilage(TC).Using the posterior angle of the meniscus as a boundary,LF and MF were divided into the cLF/cMF and pLF/pMF.Divid-ed into superficial zone(SZ)cartilage and deep zone(DZ)cartilage based on a thickness of 1/2 of the cartilage.The subchondral bone was divided into superficial bone(SB)within 5 mm of the joint cartilage,and deep bone(DB)within 6-10 mm of the joint cartilage.The T2*values of each region of cartilage and subchondral bone were evaluated through region of interest(ROI)analysis.Single fac-tor analysis of variance was used to compare the changes in T2*values.The LSD test method was used for inter-group comparison.Results After one week of intensive training,MT-SZ,cMF-SZ,PC-SZ,TC-SZ were significantly higher than before intensive training(P＜0.05).After one month of rest,there was no statistically significant difference in the T2*value of the cartilage area compared with before intensive training(P＞0.05).There was a trend of"rising first and then falling".There was no statistically signifi-cant difference in the T2*value of subchondral bone of the knee joint before intensive training and after one week of intensive training(P＞0.05).Compared with after one month of rest,except for cLF-DB,pLF-DB,trochlea cartilage-deep bone(TC-DB),the T2*value of the subchondral bone of the remaining knee joint increased before intensive training and after one week of intensive training,with sta-tistically significant differences(P＜0.05).Conclusion T2*mapping can display the changes in the ultrastructure and biochemical components of joint cartilage and subchondral bone after the new recruits intensive training,detect early injuries and conduct non-invasive quantitative evaluation.
