An in vitro comparison of a 2.7/3.5 mm hybrid plate alone and combined with crossed K-wires for canine pancarpal arthrodesis

J. L. Arnott; R. Bailey; A. Shields; D. Bennett

doi:10.3415/VCOT-07-05-0052

Veterinary and Comparative Orthopaedics and Traumatology, Table of Contents

Vet Comp Orthop Traumatol 2008; 21(04): 307-311
DOI: 10.3415/VCOT-07-05-0052

Original Research

Schattauer GmbH

An in vitro comparison of a 2.7/3.5 mm hybrid plate alone and combined with crossed K-wires for canine pancarpal arthrodesis

Authors

J. L. Arnott

¹Division of Companion Animal Sciences, Faculty of Veterinary Medicine, University of Glasgow, Glasgow, UK
R. Bailey

²School of Engineering, Science & Design, Glasgow Caledonian University, Glasgow, UK
A. Shields

²School of Engineering, Science & Design, Glasgow Caledonian University, Glasgow, UK
D. Bennett

¹Division of Companion Animal Sciences, Faculty of Veterinary Medicine, University of Glasgow, Glasgow, UK

Abstract

Summary

Several techniques have been described for canine pancarpal arthrodesis (PCA) with dorsal plating becoming the most accepted method for ease of placement despite the proposed biomechanical disadvantages. The aim of this study was to compare the biomechanical effects of the addition of crossed K-wires to a standard 2.7/3.5 mm hybrid PCA plate. A 2.7/3.5 mm hybrid PCA plate, alone and combined with crossed K-wires were tested. Six pairs of cadaver forelimbs were collected from medium-sized dogs with an average weight of 24 kg by elbow disarticulation. The limbs were potted and fixed in an Instron load cell (Instron, High Wycombe, UK) and axially loaded to failure. Load displacement data and mode of failure were recorded and stiffness, yield load and ultimate load at failure were calculated. The yield load (kN) of the plate and K-wire construct (1.278 ± 0.11) was significantly higher than for the plate construct alone (1.002 ± 0.07) (p = 0.00056). However, the differences between the two constructs in stiffness and failure loads were not significant

Keywords

Pancarpal arthrodesis - canine - dorsal plate - biomechanical - crossed K-wires

Full Text

References

References
1 Johnson KA. Carpal arthrodesis in the dog.. Aust Vet J 1980; 56: 565-573.
2 Tomlin JL, Pead MJ, Langley-Hobbs SJ. et al. Radial carpal bone fracture in dogs.. J Am Anim Hosp Assoc 2001; 37: 173-178.
3 Comerford EJ, Doran IC, Owen MR. Carpal derangement and associated carpal valgus in a dog.. Vet Comp Orthop Traumatol 2006; 19: 113-116.
4 Ralphs SC, Beale BS, Whitney WO. et al. Idiopathic erosive polyarthritis in six dogs (description of the disease and treatment with bilateral pancarpal arthrodesis).. Vet Comp Orthop Traumatol 2000; 13: 191-196.
5 Hildreth BE, Johnson KA. Ulnocarpal arthrodesis for the treatment of radial agenesis in a dog.. Vet Comp Orthop Traumatol 2007; 20: 231-235.
6 Li A, Gibson N, Carmichael S. et al. Thirteen pancarpal arthrodeses using 2.7/3.5 mm hybrid dynamic compression plates.. Vet Comp Orthop Traumatol 1999; 12: 102-107.
7 Chamber JN, Bjorling DE. Palmar surface plating for arthrodesis in the canine carpus.. J Am Anim Hosp Assoc 1982; 18: 875-882.
8 Guerrero TG, Montavon PM. Medial plating for carpal panarthrodesis.. Vet Surg 2005; 34: 153-158.
9 Viguier E, Znaty D, Medelci M. et al. In vitro comparison between a DCP and external fixator for pancarpal arthrodesis in the dog.. Equine Vet J 2001; 33 (Suppl. 01) 32-35.
10 Lotsikas PJ, Radasch RM. A clinical evaluation of pancarpal arthrodesis in nine dogs using circular external skeletal fixation.. Vet Surg 2006; 35: 480-485.
11 Hulse D, Hyman W, Nori M. et al. Reduction in plate strain by addition of an intramedullary pin.. Vet Surg 1997; 26: 451-459.
12 Hulse D, Ferry K, Fawcett A. et al. Effect of intramedullary pin size on reducing bone plate strain.. Vet Comp Orthop Traumatol 2000; 13: 185-190.
13 Johnson AL, Houlton JEF. Arthrodesis of the carpus.. In: AO Principles of fracture management in the dog and cat. Johnson AL, Houlton JEF, Vanini R (eds). New York: Thieme; 2005: 450-452.
14 Whitelock RG, Dyce J, Houlton JE. Metacarpal fractures associated with pancarpal arthrodesis in dogs.. Vet Surg 1999; 28: 25-30.
15 Yanoff SR, Hulse DA, Hogan HA. et al. Measurements of vertical ground reaction force in jumping dogs.. Vet Comp Orthop Traumatol 1992; 5: 44-50.
16 Budsberg SC, Vertstraete MC, Soutas-Little RW. Force plate analysis of the walking gait in healthy dogs.. Am J Vet Res 1987; 48: 915-918.
17 Kirpensteijn J, Van Den Bos R, Van Den Brom WE. et al. Ground reaction force analysis of large breed dogs when walking after the amputation of a limb.. Vet Rec 2000; 146: 155-159.
18 Riggs CM, Decamp CE, Soutas-Little RW. et al. Effects of subject velocity on force platemeasured ground reaction forces in healthy Greyhounds at the trot.. Am J Vet Res 1993; 54: 1523-1526.
19 Dueland RT, Vanderby R, McCabe RP. Fatigue study of six and eight mm diameter interlocking nails with screw holes of variable size and number.. Vet Comp Orthop Traumatol 1997; 10: 194-199
20 Parker RB, Brown SG, Wind AP. Pancarpal Arthrodesis in the dog: A review of forty-five cases.. Vet Surg 1981; 10: 35-43
21 Denny HR, Barr ARS. Partial carpal and pancarpal arthrodesis in the dog: A review of 50 cases.. J Small Anim Pract 1991; 32: 329-334
22 Kapatkin AS, Wininger FA, Radin A. et al. Biomechanical testing of the 2.7/3.5mm hybrid dynamic compression plate versus the AO/ASIF 3.5mm dynamic compression plate.. Vet Comp Orthop Traumatol 2003; 3: A21.
23 Kirsch JA, Dejardin LM, DeCamp CE. et al. In vitro mechanical evaluation on the use of an intramedullary pin-plate combination for pantarsal arthrodesis in dogs.. Am J Vet Res 2005; 66: 125-131.
24 Sukhiani HR, Holmberg DL. Ex vivo biomechanical comparison of pin fixation techniques for canine distal femoral physeal fractures.. Vet Surg 1997; 26: 398-407.