Abstract
BackgroundIntra-articular ganglion cysts of the knee are rare. Here we report a case of an arthroscopically confirmed ganglion cyst arising from the posterior cruciate ligament (PCL) along with preoperative magnetic resonance imaging (MRI) findings.Case presentationA 39-year-old female admitted a hospital with left knee pain with flexion and extension. MRI revealed a cystic lesion along the PCL. The lesion exhibited slight but homogeneous hyperintensity on T1 weighted images. Thin septals were visible within the lesion. Arthroscopic examination revealed a mass lesion with a white fibrous capsule, located near the PCL. A gel-like liquid spurted from the mass upon puncture. The lesion was completely resected. Histological examination revealed loose connective tissue and fibroblasts with collagen, thus confirming the diagnosis of a ganglion cyst.ConclusionMany reports have suggested intra-articular ganglion cysts of the knee are rare. In our study, a cystic lesion may have been impinged between the PCL and intercondylar notch, resulting in flexion and extension difficulty in the left knee. Arthroscopic resection is the major treatment of intra-articular ganglion cyst, and preoperative MRI findings can predict the correct arthroscopic approach. We have reported a case in which an intra-articular ganglion attached to the PCL.
Highlights
Many reports have suggested intra-articular ganglion cysts of the knee are rare
A cystic lesion may have been impinged between the posterior cruciate ligament (PCL) and intercondylar notch, resulting in flexion and extension difficulty in the left knee
Arthroscopic resection is the major treatment of intra-articular ganglion cyst, and preoperative magnetic resonance imaging (MRI) findings can predict the correct arthroscopic approach
Summary
We have reported a case in which an intra-articular ganglion attached to the PCL was detected using preoperative MRI. MRI is useful for depicting ganglion features, including size and location. This modality may facilitate preoperative decisions regarding the direction of the arthroscopic approach. Availability of data and materials Data are available on request from the corresponding author. Competing interests The authors declare that they have no competing interests. Authors’ contributions SK and TN organized and wrote this manuscript. DT and SM analyzed and interpreted the patient data regarding the intra-articular ganglion cyst. YT was a major contributor in writing the manuscript. All authors have read and approved the final manuscript
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