Phimosis or Stenosis of the Preputial Orifice

PHIMOSIS OR STENOSIS OF THE PREPUTIAL ORIFICE

Inability to protrude the penis outside the sheath or prepuce is called phimosis.
  • Stenosis of the preputial orifice is usually acquired due to injuries, wounds and infections.
  • In cattle with pendulous sheaths, the preputial orifice may be stepped on causing severe contusion and swelling.
  • Congenital stenosis in dogs may be corrected by a dorsal incision of the external preputial orifice.
  • In bull, dog or ram, the usual procedure to correct a simple stenosis of the preputial orifice caused by cicatricle tissue is to remove a triangular portion of the skin from the ventral portion of the sheath or prepuce.
  • The base of the triangle is at the preputial orifice.
  • After the skin is removed, an incision is made through the midline of the prepuce to the apex of the triangle.
  • After the careful hemostasis the preputial membrane is suture to the skin by interrupted catgut sutures.
  • Chronic prolapse of the prepuce is a very common cause of posthitis and phimosis. It is common in Bos indicus cattle.

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Prolapse of prepuce Pendulous sheath

Hair ring Phimosis

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  • Pendulous sheath, a large preputial orifice, relaxed preputial membranes are inherited traits.
  • In the affected breeds, the prolapse of the prepuce may occur and it becomes dry, traumatized, swollen and fibrotic.
  • Mild cases-the affected bull may be confined.
  • The prolapsed organ should be carefully washed, cleaned and dried.
  • Oily antibiotics or bland antiseptic preparations are applied and the prolapsed organ is replaced and held in position by purse-string suture through preputial orifice.
  • More severe cases where replacement is not possible, circumcision or even amputation of the prepuce is necessary.

Prevention

  • It is undesirable to operate an affected bull since the prolapse of prepuce is genetically predisposed.
  • Males should be selected for lighter, less pendulous sheaths with smaller preputial orifice and stronger retractor penis muscle.
  • Phimosis may be congenital in young dogs, cats and horses

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Last modified: Wednesday, 6 June 2012, 1:49 PM