Craig J G, Cramer K E, Cody D D, Hearshen D O, Ceulemans R Y, van Holsbeeck M T, Eyler W R
Department of Radiology, Henry Ford Hospital, Detroit, MI 48202, USA.
Radiology. 1999 Mar;210(3):835-43. doi: 10.1148/radiology.210.3.r99mr20835.
To examine growth plates of the distal femur and tibia with magnetic resonance (MR) imaging to detect bone bridges and other deformities in children.
Thirteen children (nine boys and four girls, aged 5-13 years; mean age, 9.8 years) were referred because of suspected or known bone bridging of the growth plate. Among the 13 patients, 10 had Salter-Harris fractures of the knee or ankle, two had Blount disease, and one had neonatal sepsis. Fat-saturated spoiled gradient-recalled images enabled reconstruction of a three-dimensional model of the growth plate. Patients underwent one to four MR examinations.
Nine patients had bone bridging of less than 1% to 39% of the area of the growth plate. On MR images obtained in the growth plate of five patients, a stripe of low signal intensity indicated fracture. On MR images obtained in three patients, intrusions of growth plate cartilage into the metaphysis were seen to increase in depth over time. MR images obtained in four patients showed no bridges. In the two patients who underwent surgery, excellent correspondence was found between MR findings and surgical observations.
Marked undulation or splitting of the growth plate may occur with fixation of some cartilage in the metaphysis or epiphysis while growth continues. The configuration of the growth plate and bone bridges can be accurately mapped with MR imaging. Treatment planning is facilitated.
通过磁共振成像（MR）检查股骨远端和胫骨的生长板，以检测儿童的骨桥及其他畸形。
13名儿童（9名男孩和4名女孩，年龄5 - 13岁；平均年龄9.8岁）因疑似或已知生长板骨桥而前来就诊。13例患者中，10例有膝关节或踝关节的Salter-Harris骨折，2例有Blount病，1例有新生儿败血症。脂肪饱和扰相梯度回波图像可重建生长板的三维模型。患者接受了1至4次MR检查。
9例患者的骨桥占生长板面积的比例小于1%至39%。在5例患者生长板的MR图像上，一条低信号强度带提示骨折。在3例患者的MR图像上，可见生长板软骨向干骺端的侵入随时间推移而加深。4例患者的MR图像未见骨桥。在接受手术的2例患者中，MR检查结果与手术观察结果高度吻合。
在生长持续进行时，干骺端或骨骺内的部分软骨固定可能会导致生长板出现明显的起伏或分裂。利用MR成像可准确描绘生长板和骨桥的形态，有助于治疗方案的制定。
