Knee Surg Relat Res.
2012 Dec;24(4):249-253. 10.5792/ksrr.2012.24.4.249.
Baker's Cyst with Intramuscular Extension into Vastus Medialis Muscle
- Affiliations
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- 1Department of Orthopaedic Surgery, Pusan National University School of Medicine, Busan, Korea. osteokim@yahoo.co.kr
- 2Department of Radiology, Pusan National University School of Medicine, Busan, Korea.
- 3Department of Pathology, Pusan National University School of Medicine, Busan, Korea.
- KMID: 2094232
- DOI: http://doi.org/10.5792/ksrr.2012.24.4.249
Abstract
- Baker's cysts are one of the most common cystic lesions around the knee joint and mainly caused by fluid distension of the gastrocnemius-semimembranous bursa that is situated along the medial side of the popliteal fossa. Typically, a Baker's cyst extends along the intermuscular planes around the knee joint and may enlarge any direction. However, it is mostly located in the inferomedial or superficial layers of the knee joint and less commonly extends laterally or proximally. Expansion of the cyst tends to respect the intermuscular planes, and Baker's cysts along the intramuscular route have been rarely reported. Thus, we report a case of Baker's cyst with intramuscular extension into the vastus medialis muscle.
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