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Arthroscopic dorsal closing-wedge osteotomy of the second metatarsal head (MTh) of the right foot. The patient is in the supine position. A triangular supporting frame is placed under the knee to flex the knee and put the foot flat onto the operating table. The dorsolateral portal is the viewing portal, and the dorsomedial portal is the working portal. The osteochondral lesion (OCL) is debrided with an arthroscopic shaver, and all the loose cartilage flaps are removed.
