Abstract
955 he imaging anatomy of the medial and lateral supporting structures of the knee has been previously described [1–3]. Normal anatomy and pathology of structures making up the posteromedial and posterolateral corners of the knee have also been discussed [2]. However, to our knowledge no articles have directly addressed the posterior capsular area of the knee at the level of the popliteal fossa. This area is well depicted on sagittal MR images. Fibers from the posteromedial and posterolateral knee do contribute to the posterior capsule. From the medial side of the knee, a portion of the distal semimembranosus tendon extends along the posterior aspect of the knee. This portion is referred to as the oblique popliteal ligament [1]. From the lateral side of the knee, fibers from the arcuate ligament contribute to the posterior knee capsule [3]. Pathologic conditions commonly affect the posterior knee capsule or intercondylar area. Hence, a correct understanding of the normal imaging anatomy of the posterior capsular area is necessary for precise location of a lesion. Precise location of a lesion is important for the surgical approach and for the differential diagnosis. Normal Anatomy and Pathology of the Posterior Capsular Area of the Knee: Findings in Cadaveric Specimens and in Patients
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