Catgut suture treatment produces roughly twice the stitch-holding time of plain catgut, but greater tissue inflammation occurs. Full tensile strength is extended to 18–21 days. It is brown rather than straw-colored, and has improved smoothness due to the dry presentation of the thread (plain catgut is wet). It is otherwise similar to plain catgut. Fast catgut suture is heat-treated to give even more rapid absorption in the body. The first known absorbable sutures were made of the intestines of sheep. The manufacturing process was similar to that of natural musical strings for violins and guitar, and also of natural strings for tennis
Rackets (sport) Rackets (sport) Rackets or racquets is an indoor racket sport played in the United Kingdom, Ireland, United States, and Canada. The sport is infrequently called "hard rackets", possibly to distinguish it from the related sport of squash (formerly called "squash rackets"). Historians generally assert that rackets began as an 18th-century pastime in London's King's Bench and Fleet debtors prisons. The prisoners modified the game of fives by using tennis rackets to speed up the action. They played against the prison wall, sometimes at a corner to add a sidewall to the game. Rackets then became popular outside the prison, played