Magnetic resonance characteristics of medial plica of the knee: correlation with arthroscopic resection.

Objective: The purpose of this study was to determine if there are magnetic resonance (MR) characteristics of the medial plica that correlate with the likelihood of plica resection.

Methods: Sixty-six knee MR examinations from patients who underwent subsequent knee arthroscopy were evaluated retrospectively for the presence of a medial plica. The plicae were then characterized by relative width, thickness, relation to the trochlear cartilage, associated cartilage changes, and effusion.