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Join the roomNils Otto Silfverskiöld was a Swedish Olympic gymnast, orthopedic surgeon and left-wing intellectual. As a gymnast he won a gold medal in the Swedish system team event at the 1912 Summer Olympics. As a surgeon he developed a knee flexion test that was later adapted in a diagnosis of foot and ankle disorders. He was employed at the Sabbatsberg Hospital (1927), Serafimerlasarettet (1936) and Karolinska University Hospital (1940).
