Actual wounds occur in surgical operations, or accidentally as by
shafts, poles, forks, hooks, bites, etc., or from calculus or a catheter
forced into a false route. An arrested or slowly moving calculus has
been known to induce several perforating ulcers causing infiltration of
urine and infecting germs into the connective tissue. This determines
rapidly increasing œdematous fluctuating tumors. Gangrene and septic
intoxication are common results, especially in cattle.
Longitudinal wounds keep more open and heal more readily than transverse
wounds, probably because the circular muscular fibres in contracting,
pull the edges apart and counteract stricture, the breach being filled
up by granulations. The perineal wound in lithotomy will heal thus in 20
days, while that made in amputation of the penis is exceedingly liable
to circular contraction and stricture or occlusion.
Contusions of the perineum, may cause lacerations of the urethra and
hæmorrhages, with bloody discharge or sanguineous swelling.
_Treatment._ Will vary. Calculi must be diagnosed and removed. Breach of
the walls of the urethra may necessitate frequent catheterization or,
better, the wearing of a catheter. Escape of urine into the connective
tissue should be met by a counter opening in the skin to drain the part
and allow free antisepsis. Similar resorts are required for urinary
infiltration, accompanied by antiseptic injection subcutem. Abscesses
must be located, punctured with trochar and cannula, evacuated and
injected antiseptically.