Article Text

Urethral sphincter mechanism incompetence in male dogs: a retrospective analysis of 54 cases
  1. A. Aaron, BVSc, MRCVS1,
  2. K. Eggleton, BVSc, MRCVS1,
  3. C. Power, BVSc,MRCVS1 and
  4. P. E. Holt, BVMS, PhD, CBiol, MlBiol, DipECVS, FRCVS1
  1. 1 Department of Clinical Veterinary Science, University of Bristol, Langford House, Langford, Bristol BS18 7DU
  1. This study formed part of a University of Bristol fourth year veterinary student project
  2. Requests for reprints should be sent to Dr P. E. Holt


Incompetence of the urethral sphincter mechanism is uncommon in male dogs. This paper reviews 54 cases. As in the bitch, the condition can occur either as a congenital or as an acquired condition, in which neutering may play a part; larger breeds appear to be at greater risk. Incontinence is more likely to occur when the intra-abdominal pressure might be expected to increase, for example when the dog is recumbent. In comparison with the bitch, the condition appears less likely to respond to medical therapy and its pathophysiology is poorly understood.

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