King S J, Carty H M, Brady O
Department of Diagnostic Radiology, Royal Liverpool Children's NHS Trust, Eaton Road, Liverpool L12 2AP, UK.
Pediatr Radiol. 1996;26(4):287-90. doi: 10.1007/BF01372115.
The purpose of this study was to evaluate the significance of meniscal appearances and determine the frequency of abnormalities seen on magnetic resonance (MR) imaging in children with knee injuries. We reviewed 78 consecutive MR imaging studies of 74 children aged 5-16 years with unfused epiphyses. Menisci were evaluated using conventional grading techniques. We used chi2 to compare the frequencies of medial and lateral meniscus and anterior cruciate ligament (ACL) tears with each other and with published data for children. Similarly, we compared the proportions of tears of these structures with published data. Arthroscopy results from 26 children were used to calculate sensitivity and specificity of MR imaging for meniscal tears, which were 100% (8/8) and 89% (16/18), respectively. The majority of studies (82%) had grade I or II signal intensity in one or both menisci. Arthroscopy results available in 33% of this group revealed normal menisci. Tears of the medial and lateral menisci were significantly more common than of the ACL. Injuries of the ACL were seen significantly less frequently than previously reported. Grade I or II meniscal signal intensity in children with knee injuries is consistent with a normal meniscus. Tears of the menisci are more common than ACL tears. MR imaging in this context appears reliable.
本研究的目的是评估半月板表现的意义，并确定膝部损伤儿童磁共振成像（MR）中异常情况的出现频率。我们回顾了74名年龄在5至16岁、骨骺未融合儿童的78例连续MR成像研究。使用传统分级技术评估半月板。我们使用卡方检验来比较内侧半月板、外侧半月板和前交叉韧带（ACL）撕裂的频率，并与已发表的儿童相关数据进行比较。同样，我们将这些结构的撕裂比例与已发表数据进行比较。26名儿童的关节镜检查结果用于计算MR成像对半月板撕裂的敏感性和特异性，分别为100%（8/8）和89%（16/18）。大多数研究（82%）在一个或两个半月板中出现I级或II级信号强度。该组中33%有可用关节镜检查结果的患者半月板正常。内侧和外侧半月板撕裂比ACL撕裂明显更常见。ACL损伤的出现频率明显低于先前报道。膝部损伤儿童的I级或II级半月板信号强度与半月板正常一致。半月板撕裂比ACL撕裂更常见。在这种情况下，MR成像似乎是可靠的。
