Dirim B et al. - The frequency of the communication between the proximal TFJ and knee via the subpopliteal recess related to a defect in the posterior ligament of the fibular head was found to be 27.5%. Evidence of an injury was present in 9% of anatomic specimens that had such communication. Injury to the posterior ligament of the fibular head and instability of the proximal TFJ may accompany a variety of knee injuries.
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