230 PBINCrPLES OP 7BTEEINABY SURGERY 



DISEASES OF SYNOVIAL SHEATHS OP ' 

 TENDONS. 



Inflammation of a Synovial Tendon Sheath (Tendo- 

 vaginitis). 



Why are inflammatory processes of synovial tendon sheaths 

 and those of joints closely related ? 

 Because in either instance a synovial membrane is in- 

 volved. It may be classified as a serous membrane, its inner 

 layer being lined with endothelial cells, being analogous to 

 the pleura and peritoneum. 



What formes of tendovaginitis are recognized 9 



According to its course it is acute or chronic, depending 

 on the origin, primary or secondary, in regard to the cause, 

 aseptic or traumatic, infectious or septic, according to the 

 exudate, serous, fibrinous, purulent. 



From, a practical point of view, which forms are the most 

 important onis ? 

 The acute and chronic, serous and fibrinous, and the acute 

 purulent form. 



W hat is serous tendovaginitis ? 



Inflammation of the synovial sheath of a tendon with a 

 serous exudate into the sheath. 



What are the causes of serous tendovaginitis ? 



Usually mechanical irritations, as overwork (more rarely 

 Contusions), or infectious diseases, as contagious pleuro- 

 pneumonia, septicemia, etc. ; in the latter usually more than 

 one tendon sheath is diseased, while in the former, as a rule, 

 one synovial tendon sheath only exhibits pathological lesions. 



