摘要
Abstract
Objective To study MRI performance and characteristics of the incomplete closed growth plate injury of knee in the recruits during intensive training .Methods Retrospective analysis was made of MRI of growth plate injury of 36 recruits knees in military training.Tanner’s grading of the growth plate closure degree was used , and adopting S-H (Salter-Harris,S-H) Ⅰ~Ⅶclassi-fication of the growth plate damaged was adopted .Results (1)There were 39 pieces of growth plate injury among 36 cases(knee):10 pieces in the distal femora and 29 pieces in the proximal tibia ,including 6 pieces of 3 cases of the femur and tibia injuries at the same time on them.(2) Tanner’s staging of the closure degree displayed growth plate in 36 recrruits by imaging:19 of 39 were degree 1, 17 were degree 2, 3 were degree 3.(3) S-H classification:2 of 39 were typeⅡ, 5 were typeⅢ, 4 were typeⅣ, 22 were typeⅤand 6 were typeⅥ.There were no typeⅠand type Ⅶ.( 4 ) MRI signal of hemorrhage and edema were displayed in the acute phase of growth plate injury.MRI signals changed with time, could manifest signals of more than short T2, such as T2 and long T2.However, e-dema relieved or subsided in the later , stage and MRI signal displayed a variety of changes with the pathological events such as bleed -ing absorbed , necrosis , cystic degeneration and fiberosis of damaged tissue of growth plate .( 5 ) Followed up by imaging:27 pieces were closed over the same period of the unaffected side in the growth plate injury of 39 pieces .12 pieces of growth plate were asyn-chronously closed (early 4, delayed 8) ,which were the damage of typeⅤ.In shape, 21 pieces were of normal form .The rest of the 18 changed in the form (local bone hypertrophy or similar bone bridge form 9, non-uniform thickness and thinning 9).11 of 18 were the damage of the type Ⅴ.(6)Good clinical prognosis in 29 cases of 36 cases.7 cases with joint deformity (knee varus 2, knee valgus 4, limb slightly shorter 1),they were of typeⅤ.Conclusions The incompletely closed growth plate of knee may be damaged during the recruit military training .Most occurred at the beginning of the training and only one side of knee .Recruits are relatively young , their growth plate closure degree is low and susceptible to injury mostly of type Ⅴ.Timely clinical treatment promises good prognosis .关键词
新兵/集训/生长板/损伤/磁共振成像/膝关节Key words
recruits/intensive training/growth plate/injury/MR imaging/knee分类
医药卫生
