Failed hip replacements.

divert the air flow through the artificial fistula during forced expiration. This leaves the patients free to gesticulate with both hands to make their points more forcibly. Good functional results with these speech buttons have been reported from all over the world, and long term complications seem to be relatively few.2"22 Many patients who have been unable to acquire oesophageal speech have been successfully treated: fluency rates of 90% have been achieved.'8