This research was supported by the Hohns-Johnson Research Award (#201-00-25-00-8590) from the Veterinary Orthopedic Society.
Effect of Pubic Symphysiodesis on Pelvic Development in the Skeletally Immature Greyhound
Version of Record online: 29 APR 2004
Volume 29, Issue 2, pages 178–190, March 2000
How to Cite
Swainson, S. W., Conzemius, M. G., Riedesel, E. A., Smith, G. K. and Riley, C. B. (2000), Effect of Pubic Symphysiodesis on Pelvic Development in the Skeletally Immature Greyhound. Veterinary Surgery, 29: 178–190. doi: 10.1111/j.1532-950X.2000.00178.x
Presented at the 25th Annual Conference of the Veterinary Orthopedic Society, Snowmass, Colorado, Feburary 21 st-28th, 1998.
Address reprint requests to Mike G. Conzemius, DVM, Diplomate ACVS, Iowa State University, Department of Veterinary Clinical Sciences, Veterinary Teaching Hospital, Ames, Iowa 50011–1250.
- Issue online: 29 APR 2004
- Version of Record online: 29 APR 2004
Objective— To evaluate the effect of pubic symphysiodesis (PS) on pelvic development in skeletally immature dogs.
Study Design— Prospective randomized clinical trial.
Animals Eight 4 month-old, sexually intact female Greyhounds.
Methods— Initial PS was performed at 4 months of age using a powered stapling device. Because of failure of the initial surgery, a second PS was performed 1 month later by resecting the pubic symphysis with a rongeur followed by placement of handmade bone staples in four dogs. Sham PS was performed in four control dogs at 4 months of age. Pubic growth rate and pelvic development were evaluated using standard plane radiography and computed tomography. Specific measurements included acetabular ventroversion, Norberg angle, lateral center-edge angle, and pelvic inlet dimensions. Hip distraction indices were determined as well.
Results— PS at 4 months of age using a stapling device failed. Pubic symphysiodesis using hand made staples was successful at 5 months of age and did not result in any clinically significant intraoperative or postoperative complications. Pubic symphysiodesis markedly decreased pubic symphysis growth in the treatment group. Hip distraction indices and pelvic inlet circumference, area, and width significantly decreased in treated dogs compared to those in the control group. Acetabular ventroversion was significantly increased in treated dogs compared to those in the control group.
Conclusions— PS decreases pelvic canal size, increases acetabular ventroversion, and does not appear to have any clinically significant complications.
Clinical Relevance— PS performed in skeletally immature dogs with hip dysplasia may provide an effect similar to a triple pelvic osteotomy and warrants further investigation.