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Fig. 1E —Left knee from cadaver of 79-year-old man. Anatomic
photograph of cadaveric knee specimen shows defect within posterior ligament
of fibular head (black arrows) that led to communication between
proximal TFJ (white arrow) and knee joint via subpopliteal recess
(arrowheads). P = popliteal tendon, F = fibula, T = tibia.