This study was presented in part at the 16th annual meeting of European College of Veterinary Surgeons, Dublin, Ireland, 2007.
Juvenile Pubic Symphysiodesis and Juvenile Pubic Symphysiodesis Associated with Pectineus Myotomy: Short-Term Outcome in 56 Dysplastic Puppies
Article first published online: 3 FEB 2010
© Copyright 2010 by The American College of Veterinary Surgeons
Volume 39, Issue 2, pages 158–164, February 2010
How to Cite
BERNARDÉ, A. (2010), Juvenile Pubic Symphysiodesis and Juvenile Pubic Symphysiodesis Associated with Pectineus Myotomy: Short-Term Outcome in 56 Dysplastic Puppies. Veterinary Surgery, 39: 158–164. doi: 10.1111/j.1532-950X.2010.00644.x
- Issue published online: 3 FEB 2010
- Article first published online: 3 FEB 2010
- Submitted November 2008; Accepted May 2009
Objectives— (1) To compare short-term outcome of juvenile pubic symphysiodesis (JPS) in puppies aged 12–17 weeks with lax hips (group JPS1), in puppies aged 18–22 weeks (group JPS2), and control (group C) puppies; and (2) to document outcome of bilateral pectineus myotomy (PM) associated with JPS in 18–22-week-old puppies (group JPS–PM).
Study Design— Prospective study.
Methods— Puppies (12–22 weeks) from large and giant breed dogs with a combination of a positive Ortolani sign, poor acetabular coverage (Norberg angle [NA]≤100°), and a subluxation index (SI) >0.5 for one or both hips were selected. Puppies aged <18 weeks were randomly assigned to group JPS1 or C. Puppies aged 18–22 weeks were randomly assigned to group JPS2, JPS–PM, or C. Three to 4 months later, surgery was considered successful in pain-free dogs with negative Ortolani sign, normalized acetabular coverage (NA≥105°), and SI>0.5. Success rates were compared using Fisher's exact tests: JPS1 versus JPS2 versus C; JPS2 versus JPS–PM. Significance was set at P<.05.
Results— All dysplastic hips from nonoperated (C) groups were dysplastic at follow-up, meaning that our criteria for case selection were accurate. JPS1 had significantly better success rate than JPS2 (85 versus 17.8%, respectively). JPS–PM dysplastic hips failed to demonstrate a better outcome than JPS2 hips.
Clinical Relevance— This study confirms, on a large series of dysplastic hips, the age-dependent effects of JPS, with better results if performed before 18 weeks of age. There is no benefit of adding PM to the procedure in candidates >18 weeks at surgery.