![]() Mechanized versions of the chain saw were developed but in the later 19th century, it was superseded in surgery by the Gigli twisted-wire saw. Symphysiotomy had too many complications for most obstetricians, but Jeffray's ideas became accepted, especially after the development of anesthetics. Jeffray explained that the chain saw would allow a smaller wound and protect the adjacent neurovascular bundle. Park and Moreau described successful excision of diseased joints, particularly the knee and elbow. Moreau, with Observations by James Jeffray, M.D." In this communication, he translated Moreau's paper of 1803. ![]() In 1806, Jeffray published "Cases of the Excision of Carious Joints by H. Jeffray claimed to have conceived the idea of the chain saw independently about that time, but he was not able to have it produced until 1790. It was illustrated in the second edition of Aitken's Principles of Midwifery, or Puerperal Medicine (1785) in the context of a pelviotomy. 1783–1785) by two Scottish doctors, John Aitken and James Jeffray, for symphysiotomy and excision of diseased bone, respectively. A "flexible saw", consisting of a fine serrated link chain held between two wooden handles, was pioneered in the late 18th century (c. The origin of chain saws in surgery is debated. Historical osteotome, a medical bone chainsaw
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