Application of a semitendinosus muscle flap in the treatment of perineal hernia in a cat

Abstract

The Veterinary Record, February 5, 2005 pouching of the rectal wall) was revealed. The right semitendinosus muscle was dissected and transected at the midbelly, and the flap was rotated beneath the anus (Fig 3). The external anal sphincter, coccygeal muscle, levator ani muscle and internal obturator muscle were exposed. For repair of the left side of the perineal hernia, the original medial border of the semitendinosus muscle was sutured to the ventral part of the external anal sphincter, and the original lateral border was sutured to the ventral part of the coccygeal muscle, levator ani muscle and internal obturator muscle on the ischiatic table. The distal end of the semitendinosus muscle was sutured to the dorsal part of the coccygeal and levator ani muscles. A single interrupted suture pattern and polypropylene 2/0 USP (Prolene; Ethicon) were used. The subcutis and skin were closed in a routine fashion. Because of the length of this operation, repair of the prepubic hernia was delayed for two weeks.Butorphanol (Butomidor; Richter-Pharma) at a dose of 0·1 mg/kg was given intramuscularly at four-hour intervals during the first day after surgery. The cat first defecated on the second day after surgery; defecation appeared to be painless, with minimal straining. There were no problems with gait or urination, but the owner observed that the cat ran more slowly and became tired more quickly than was usual. The stitches were removed 10 days after the operation.The prepubic hernia was repaired 15 days after the first surgery. Under the general anaesthesia described above, an approach through the caudal ventral midline was made. The urinary bladder was found in the prepubic hernia. The caudal border of the ruptured rectus muscles was sutured to the prepubic ligament and the pubic bone with horizontal mattress sutures using nylon 1 USP (Dermalon; David-Geck). The subcutis and skin were closed routinely. After the operation, analgesia was provided as described above. Straining during defecation resolved a few days after the surgery, and the stitches were removed on the 10th day following surgery.Surgical repair of the right side of the hernia was not carried out; once a month the cat was brought to the clinic for control of the right side of the perineal diaphragm.One year after the operation, the cat remained healthy. The perineal diaphragm on the left side and the ventral side was PERINEAL hernia occurs when separation of the pelvic diaphragm muscles allows caudal displacement of the pelvic or abdominal organs, or lateral deviation (diverticulum, dilatation or sacculation) of the rectum into the perineum (Welches and others 1992). It occurs most commonly in dogs, but sporadic cases in cats have also been described (Ashton 1976, Leighton 1979, Johnson and Gourley 1980; Welches and others (1992) described 40 cases in cats. The aetiology of perineal hernia in cats is unclear. In the study by Welches and others (1992), 20 of the cats had pre-existing or concurrent medical problems that may have played an important rol...

An unusual case of a mature teratoma on the left perineal region of a young cat: surgical treatment and pathological description

“…Although a rare condition in cats, mostly in neutered males and typically bilateral [19], some cases of perineal hernia have been documented [20-22]. It is very difficult to establish the definitive diagnosis based only on clinical information.…”

Abdominal wall hernias and ruptures

“…[34][35][36][37] Bilateral herniation is more common than unilateral, and in many cases there are pre-existing medical problems that could increase the risk of perineal hernia, or a history of trauma. [34][35][36][37] Bilateral herniation is more common than unilateral, and in many cases there are pre-existing medical problems that could increase the risk of perineal hernia, or a history of trauma.…”

“…[34][35][36][37][38] The IOMF is now widely considered the standard technique for perineal hernia repair in dogs. [34][35][36][37][38] The IOMF is now widely considered the standard technique for perineal hernia repair in dogs.…”

“…37 In this case the semitendinosus (ST) was dissected and transected at its midbelly, and then rotated to the ventral perineum. 37 In this case the semitendinosus (ST) was dissected and transected at its midbelly, and then rotated to the ventral perineum.…”

Análise cinética da locomoção aplicada à técnica de transposição do músculo semitendinoso na reparação de hérnia perineal bilateral em cães

“…O emprego da técnica no Brasil foi descrito por Galleazzi et al (2006) em um cão. Essa técnica também foi utilizada em um gato com cinco anos de idade que apresentava sinais inicias de constipação e tenesmo, sendo diagnosticada presença de hérnia dois meses após a primeira avaliação (VNUK et al, 2005).…”