Department of Orthopaedics, Kasturba Medical College, Manipal University, Manipal, Karnataka 576104, India.
Singapore Med J. 2012 Apr;53(4):e80-2.
Ganglion cysts are more commonly associated with the anterior cruciate ligament than the posterior cruciate ligament (PCL). A literature review showed that all reported cases of ganglion cysts to date involved adults. We report a rare case of ganglion cyst in the PCL of a four-year-old boy, and discuss its aetiology, clinical presentation, imaging features and management. Ganglion cysts of the PCL may be confused with meniscal cysts arising from tears of the posterior horn of the medial meniscus on magnetic resonance (MR) imaging. Hence, the posterior horn of the medial meniscus has to be carefully evaluated to rule out a tear. MR imaging is the method of choice to confirm diagnosis, and arthroscopic resection is a safe treatment modality even in children.
神经腱鞘囊肿更常与前交叉韧带相关，而非后交叉韧带（PCL）。文献回顾表明，迄今为止所有报告的神经腱鞘囊肿病例均涉及成年人。我们报告了一例罕见的四足岁男孩后交叉韧带神经腱鞘囊肿病例，并讨论了其病因、临床表现、影像学特征和治疗方法。PCL 的神经腱鞘囊肿可能与半月板后角撕裂引起的内侧半月板 MR 成像上的半月板囊肿相混淆。因此，必须仔细评估内侧半月板后角以排除撕裂。MR 成像是确认诊断的首选方法，关节镜下切除是一种安全的治疗方式，即使在儿童中也是如此。
