Treatment of Pelvic Stenosis with Heterologous Graft and Subtotal Colectomy in a Cat


  • Paulo Sérgio Scorsato Departamento de Cirurgia Veterinária, Universidade Estadual Paulista (Unesp), Campus de Botucatu, Botucatu, SP.
  • Sheila Canevese Rahal Setor de Cirurgia Veterinária, Hospital Veterinário da Universidade de Marília (Unimar), Marília, SP, Brazil.
  • Thainan Lima Teixeira M.V., Clínica Veterinária Planeta Animal, Marília.
  • Mateus Feital Scorsato M.V., Clínica Veterinária Planeta Animal, Marília.



Background: The management of malunion of pelvic fracture and its complications may require from conservative to surgical methods, depending on the severity and temporal evolution. Thus, the aim of this present report is to describe the treatments adopted in a cat with severe pelvic stenosis.

Case: An approximately 3-year-old neutered male crossbreed cat, weighing 3 kg, was presented due to difficulty in defecation in the previous eight months. According to its tutor, the cat was adopted one year earlier, with a history of pelvic fracture due to a run over, which had been treated conservatively. The tutor also mentioned that since the appearance of dyschezia, the cat had only been treated with enemas, but without success. In abdominal palpation, there was presence of pain and a mass of firm content in descending colon topography. The radiographic examination of the pelvis presented an exuberant bone callus, characterizing an old fracture, a consolidation with change of bone axis in the right ischium, together with megacolon and fecaloma. It was initially decided that a liquid glycerin-based enema would be performed, in conjunction with clinical treatment with administration of cisapride, dimethicone and lactulose. Although the medical treatment initially helped improve the clinical picture, the cat presented fecaloma two months later. Surgical treatment was then performed, in which distraction of the pubic symphysis with use of a heterologous cortical bone graft (canine tibia stored in glycerin 98%) was performed, as the tutor was not favorable to colectomy as the first option. However, after one month of intervention, despite good evolution, the animal again showed signs of dyschezia. At this point the tutor agreed to colectomy, which was subtotal with preservation of the ileocolic valve.

Discussion: The initial treatment of the cat in this report, with administration of prokinetic, antifoaming agent and laxative was insufficient, as the cat again developed fecaloma after two months of use of such medications. In general, cats presenting dyschezia, with constipation and megacolon over a period of more than 6 months, may present irreversible lesion due to damage to the smooth muscle of the colon, with presence of hypertrophy and neuromuscular degeneration of the organ. The problem had already been explained to the tutor, who preferred the medical treatment, as until then the cat had only been treated with enemas. Several techniques have been used to promote the widening of the pelvic canal, including the pelvic symphysiotomy and use of spacers. Although the autograft stimulates osteogenesis more rapidly, there is difficulty in obtaining bones of adequate size and strength, one of the reasons why the heterologous bone was used in the present case. Even with adequate widening of the pelvic canal, the lesion’s evolution over time may have predisposed to irreversible damage of the colon in this case. Among existing techniques for resolution of megacolon in cats, coloplasty, partial colectomy, and subtotal colectomy can be cited. The latter technique was undertaken in the present case, in conjunction with ileocolic junction preservation, which has the advantage of a lower incidence of diarrhea. Thus, thesigns of dyschezia had ceased. In conclusion, the combination of procedures adopted for distraction of the pelvic symphysis and subsequent subtotal colectomy allowed adequate recovery of the animal without relapses during a follow-up period of five years. The use of the heterologous graft (canine tibia) for distraction of the pelvic symphysis behaved as a spacer of adequate size and resistance.


Download data is not yet available.


Atallah A.F., Silvan R.S., Oliveira A.L.A. & Souza H.J.M. 2016. Subcolectomia e distração da sínfise púbica com espaçador de fio ortopédico espiralado: uma opção de tratamento para gatos com estenose do canal pélvico, megacólon e obstipação. Ciência Rural. 46(8): 1472-1478.

Burton J.N. 2011. Composite fixation of comminuted ilial wing fractures in cats: three cases. Journal of Feline Medicine and Surgery. 13(5): 376-382.

Colopy-Poulsen S.A., Danova N.A., Hardie R.J. & Muir P. 2005. Managing feline obstipation secondary to pelvic fracture. Compendium on Continuing Education for the Practicing Veterinarian. 27(9): 662-670.

Denny R.H. & Butterworth J.S. 2006. Cirurgia Ortopédica em Cães e Gatos. 4.ed. São Paulo: Editora Roca, 496p.

Filho J.G.P., Penha L.H.C. & Souza S.F. 2008. Uso do enxerto ósseo cortical bovino conservado em glicerina a 98% na osteotomia femoral em gatos. Ciência Animal Brasileira. 9(4): 1071-1078.

Fossum T.W. 2008. Cirurgia de Pequenos Animais. 3.ed. Rio de Janeiro: Elsevier Brasil, 1632p.

Freitas S.H., Doria R.G.S., Mendonça F.S., Neto J.E. & Camargo L.M. 2008. Aspecto radiológico de heteroenxerto ósseo cortical fragmentado na reparação de falhas ósseas em coelhos. Revista Brasileira de Ciência Veterinária. 15(3):107-110.

Gioso M.A., Benites N.R. & Kämpf G. 2002. Análise microbiológica de ossos de cães conservados por longo período de tempo na glicerina a 98% à temperatura ambiente, objetivando a enxertia óssea. Acta Cirurgica Brasileira. 17(4): 242-246.

Hasler A.H. & Washabau R.J. 1997. Cisapride stimulates contraction of idiopathic megacolonic smooth muscle in cats. Journal of Veterinary Internal Medicine. 11(6): 313-318.

Leitghton R.L. 1969. Symphysectomy in the cat and the use of a steel insert to increase pelvic diameter. Journal of Small Animal Practice. 10(6): 355-359.

Mathiesen D.T., Scavelli T.D. & Whitney W.O. 1991. Subtotal colectomy for the treatmentof obstipation secondary to pelvic fracture mal union in cats. Veterinary Surgery. 20(2): 113-117.

McKee W.M. & Wong W.T. 1994. Symphyseal distraction-osteotomy using an ulnar autograft for the treatment of pelvic canal stenosis in three cats. Veterinary Record. 134(6): 132-135.

Newton C.D. 1985. Fractures of the pelvis. In: Newton C.D. & Nunamaker D.M. (Eds). Textbook of Small Animal Orthopedics. Philadelphia: Lippincott, pp.393-402.

Olmstead M.L. 1995. Fractures of the bones of the hind limb. In: Olmstead M.L. (Ed). Small Animal Orthopedics. St. Louis: Mosby, pp.219-228.

Piermattei D.L., Flo G.L. & Decamp C.E. 2006. Fractures of the pelvis. In: Brinker, Piermattei, and Flo's Handbook of Small Animal Orthopedics and Fracture Repair. 4th edn. St. Louis: Saunders Elsevier, pp.433-460.

Schrader S.C. 1992. Pelvic osteotomy as a treatment for obstipation in cats with acquired stenosis of the pelvic canal: six cases (1978-1989). Journal of the American Veterinary Medical Association. 200(2): 208-213.

Tomlinson J.L. 2003. Fractures of the pelvis. In: Slatter D.H. (Ed). Textbook of Small Animal Surgery. 3rd edn. Philadelphia: Saunders, pp.1989-2001.

Washabau R.J. & Holt D. 1999. Pathogenesis, diagnosis, and therapy of feline idiopathic megacólon. Veterinary Clinics of North America: Small Animal Practice. 29(2): 589-603.

Weinfeld I., Magalhães L.V. & Vila N. 1999. Estudo histológico de um novo material (biobone) indicado para reparação óssea. Revista Paulista de Odontologia. 21(4): 8-10.

White R.N. 2002. Surgical management of constipation. Journal of Feline Medicine and Surgery. 4: 129-138.



How to Cite

Scorsato, P. S., Rahal, S. C., Teixeira, T. L., & Scorsato, M. F. (2019). Treatment of Pelvic Stenosis with Heterologous Graft and Subtotal Colectomy in a Cat. Acta Scientiae Veterinariae, 47.

Most read articles by the same author(s)

1 2 > >>