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Veterinary surgery : VS · Nov 2013
The effect of abaxial retraction on pelvic geometry after pelvic symphysiotomy.
- Michael D Schlicksup, David E Holt, Wilfried Mai, Elaine S Holmes, and Kimberly A Agnello.
- Department of Clinical Studies, Veterinary Hospital of the University of Pennsylvania, Philadelphia, PA.
- Vet Surg. 2013 Nov 1; 42 (8): 958-62.
ObjectiveTo describe the effect abaxial retraction after pelvic symphysiotomy has on the geometry of the sacroiliac joints (SIs) in dogs.Study DesignExperimental study.Sample PopulationCanine cadavers (n = 9).MethodsCanine cadavers free of sacroiliac disease had pelvic symphysiotomy and retraction to 25%, 50%, 75%, and 100% of transverse sacral width, followed by axial reduction of the symphysis. Before symphysiotomy, after each abaxial retraction value, and after reduction of the symphysis each SI joint had a computed tomographic scan to evaluate the effect on the SI joints.ResultsThere was no luxation at 25% abaxial retraction, unilateral SI luxation in three cadavers after 50% abaxial retraction and in all cadavers after 75% abaxial retraction. Axial reduction of the symphysis resolved all luxations.ConclusionsPelvic symphysiotomy and abaxial retraction between 50% and 75% of transverse sacral width leads to unilateral SI luxation, which is resolved by axial reduction. While not likely requiring ancillary stabilization, SI joint luxation may be a cause for additional postoperative pain, reluctance to ambulate, and prolonged hospitalization/recovery.© Copyright 2013 by The American College of Veterinary Surgeons.
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