Biomechanical evaluation of triple pelvic osteotomy with and without additional ventral plate stabilization

R. B. Fitch; G. Hosgood; A. Staatz

doi:10.1055/s-0038-1632729

Veterinary and Comparative Orthopaedics and Traumatology, Inhaltsverzeichnis

Vet Comp Orthop Traumatol 2002; 15(03): 145-149
DOI: 10.1055/s-0038-1632729

Original Research

Schattauer GmbH

Biomechanical evaluation of triple pelvic osteotomy with and without additional ventral plate stabilization

R. B. Fitch

¹Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA

,

G. Hosgood

²Department of Veterinary Clinical Sciences, Louisiana State University, Baton Rouge, LA, USA

,

A. Staatz

¹Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA

› Institutsangaben

Abstract

Summary

The triple pelvic osteotomy (TPO) is commonly performed for immature dogs with hip dysplasia despite screw loosening being a prevalent complication. A technique to diminish the incidence of screw loosening by reducing motion at the ilial osteotomy and reducing implant migration, was evaluated. Standard triple pelvic osteotomies, and triple pelvic osteotomies with additional ventral plate stabilization, were performed and biomechanically evaluated in canine cadaver pelves. Additional ventral plate fixation was found to significantly improve axial bending stiffness of TPOs. In vitro cyclical loading, performed in a manner to approximate post-operative weight-bearing, determined that additional ventral plate fixation significantly decreased the incidence of screw loosening and motion at the osteotomy site.

Keywords

Hip dysplasia - triple pelvic osteotomy - implant loosening

Volltext

Referenzen

References
1 Plante J, Dupuis J, Beauregard G, Bonneau N, Breton L. Long-term results of conservative treatment, excision arthroplasty and triple pelvic osteotomy for the treatment of hip dysplasia in the immature dog. Vet Com Orthop Traumatol 1997; 10 (02) 101-10.
2 Koch D, Hazewinkel H, Nap R, Meij B, Wolvekamp W. Radiographic evaluation and comparison of plate fixation after triple pelvic osteotomy in 32 dogs with hip dysplasia. Vet Comp Orthop Traumatol 1993; 06 (01) 9-15.
3 Hosgood G, Lewis D. Retrospective evaluation of fixation complications of 49 pelvic osteotomies in 36 dogs. J Sm Anim Pract 1993; 34 (03) 123-30.
4 Hunt C, Litsky A. Stabilization of canine pelvic osteotomies with AO/ASIF plates and screws. Vet Comp Orthop Traumat 1988; 01 (01) 52-7.
5 Remedios A, Fries C. Implant complications in 20 triple pelvic osteotomies. Vet Comp Orthop Traumatol 1993; 06 (04) 202-7.
6 Slocum B, Devine T. Pelvic osteotomy technique for axial rotation of the acetabular segment in dogs. J Amer Anim Hosp Assoc 1986; 22 (03) 331-8.
7 Slocum B, Devine T. Pelvic osteotomy in the dog as treatment for hip dysplasia. Sem Vet Med Surg (Sm Anim) 1987; 02 (02) 107-16.
8 Van Gundy T, Hulse D, Nelson J. Mechanical analysis of pelvic fractures. In: Veterinary Orthopaedic Society Annual Meeting; 1988 February. Breckenridge, CO; 40.
9 Van Gundy T, Hulse D, Nelson J, Boothe W. Mechanical evaluation of two canine iliac fracture fixation systems. Vet Surg 1988; 17 (06) 321-7.
10 Page A, Allan C, Jasty M, Harrigan T, Bragdon C, Harris W. Determination of loading parameters in the canine hip in vivo. J Biomech 1993; 26 (4/5): 571-9.
11 Bergman G, Siraky J, Rohlmann A. A comparison of hip joint forces in sheep, dog and man. J Biomech 1984; 17 (12) 907-21.
12 Arnoczky S, Torzilli P. Biomechanical analysis of forces acting about the canine hip. Am J Vet Res 1981; 42 (09) 1581-5.
13 Rooks R. Performance evaluation of a new eight-hole adjustable bone plate developed for a single-surgical-session bilateral triple pelvic osteotomy. In: American College of Veterinary Surgeons Symposium. 1998. October 8-11: Chicago, IL.: