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A system of surgery : theoretical and practical . acase of caries, it is not a questionof an abrupt buckling, at onespot, such as is produced when apiece of tin tubing is forcibly such a case the buckling in of the anterior wall towards theposterior would inevitably com-press the cord. But here thereis a loss of substance in the ante-rior wall of the canal, and when,as a consequence, the column falls forwards, the lumen of the tube is, if anything, largerthan normal at the affected spot. Again, the shortening of the canal tends to relaxthe cord, and thus admits of its accommodating its
A system of surgery : theoretical and practical . acase of caries, it is not a questionof an abrupt buckling, at onespot, such as is produced when apiece of tin tubing is forcibly such a case the buckling in of the anterior wall towards theposterior would inevitably com-press the cord. But here thereis a loss of substance in the ante-rior wall of the canal, and when,as a consequence, the column falls forwards, the lumen of the tube is, if anything, largerthan normal at the affected spot. Again, the shortening of the canal tends to relaxthe cord, and thus admits of its accommodating itself the more easily to its alteredconditions. It is a remarkable fact, too, that, although one or more of the bodiesmay be totally destroyed, injury to the cord from actual dislocation is very rare. Thisis perhaps best explained by the gradual welding together of the parts by plasticmatter effused around the carious spot, which usually takes place. Again, all careis taken by the patient himself to shield the part from every movement or violence,. The patient from ?whom the specimen represented in tlie figure wasremoved was a blacksmith, twenty-eight years of age, and was admitted into the hospital for a psoas abscess, about the size of alarge orange, situated in the left groLu. He had an abrupt angulardeformity in the back, with protuberance of the sternum ; and Idsmuscles, particularly those of the upper extremities, were largelydeveloped. The deformity had taken place when he was fourteenyears of age ; and it had not increased since. His father being ablacksmith, he had been early put to the same work, and hadcontinued uninterruptedly at it tUl three weeks before his admis-sion, when he first noticed the swelling in the groin. On theabscess being tapped, a straw-coloured fluid was discharged ; theopening did not heal; ordinary pus continued to flow ; and hedied exhausted -Rith hectic fever. It will be remarked in thefigure, that the posterior arches and articular processes of
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Keywords: ., bookcentury1800, booksub, booksubjectsurgicalproceduresoperative