546 
TUMOURS OF THE KNEE IN CATTLE. 
occurs around one or two sutures, it is sometimes sufficient to touch 
these lightly with nitrate of silver. 
(2.) TUMOURS OF THE KNEE IN CATTLE. 
When lying down and again when rising cattle are apt to bruise the 
knee, and to produce chronic inflammation of its anterior surface, which 
often leads to great swelling and thickening of tissue. The same 
result occasionally follows falls on rough, hard ground, in which case 
inflammation is acute. 
Tumour on the knee cannot be regarded as a definite diseased con- 
Fig. 201.—Knee tumour (cutaneous form), after Stockfleth. 
dition like “ capped elbow,” but results either from chronic inflammation 
and thickening of the skin or subcutis, or from inflammation in the 
sheaths of the extensor tendons. In exceptional cases, the swelling 
consists of a “tumor albus,” due to chronic inflammation of the con¬ 
nective tissue lying around the carpal joint, producing fibrous thickening. 
These swellings were formerly divided into hard and soft forms. A 
better classification is (a) Cutaneous, (b) synovial, and (c) articular or 
periarticular. This classification, though it cannot always be observed 
clinically, facilitates the study of the condition. 
