Evaluation of a modification of the McKinnon technique to correct urine pooling in mares

The Veterinary Record
T M PradoR W Henry

Abstract

The urethral fold of 30 mares was split transversely into dorsal and ventral shelves, and the ventral shelf was used to help create a urethral extension. The dorsal shelf was stretched caudally and sutured to the roof of the extension so that it covered at least the cranial half of the extension. For 20 mares, a relaxing, vaginal incision was created cranial to the external urethral orifice to enable the dorsal shelf to be retracted further caudally. Ten of the 30 mares (33.3 per cent) developed a defect, but none developed a defect in that portion covered by the dorsal shelf of the urethral fold. Two of the 30 mares (6.7 per cent) developed a defect so small that the defect could be detected only by inserting a dye, under pressure, into the tunnel. The total number of mares that developed only a grossly visible and palpable defect was eight of 30 (26.6 per cent). Four of the 10 mares that did not receive the relief incision and six of 20 mares that did receive the relief incision developed a defect in the extension. Modifying the McKinnon technique by transversely splitting the urethral fold and retracting the dorsal half helps prevent a defect from forming in the cranial portion of the extension. The dorsal shelf can be retra...Continue Reading

References

Dec 1, 1988·The Veterinary Clinics of North America. Equine Practice·K J Easley
Sep 1, 1988·Veterinary Surgery : VS·G St JeanG K Haibel
Apr 27, 2007·Theriogenology·T M PradoB W Rohrbach

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Citations

Oct 11, 2016·The Veterinary Clinics of North America. Food Animal Practice·Tulio M PradoLionel J Dawson
Jun 20, 2012·The Veterinary Record·Patrick J Pollock

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