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DOI: 10.1055/s-0038-1666874
Veterinary Cuttable Plate in a Plate-Rod Construct for Repair of Diaphyseal Femoral Fractures in the Cat
Publikationsverlauf
19. September 2017
09. Mai 2018
Publikationsdatum:
20. September 2018 (online)
![](https://www.thieme-connect.de/media/10.1055-s-00035023/201806/lookinside/thumbnails/10-1055-s-0038-1666874_170126-1.jpg)
Abstract
Objective This study evaluated retrospectively the effectiveness of the veterinary cuttable plate (VCP) in a plate-rod construct, for the treatment of diaphyseal femoral fractures in cats.
Materials and Methods A total of 29 cats with diaphyseal femoral fracture underwent stabilization with a VCP-rod construct.
Results Fractures were classified as type A (7/29), type B (11/29) and type C (11/29) following the AO classification. Biological osteosynthesis was elected in three type B and 10 type C fractures, and open approach in the other cases. Pin diameter was 2 mm (n = 16) or 2.5 mm (n = 13); this corresponded to a percentage of pin occupation of 39.9 and 53.0% of the intramedullary cavity respectively. The 2.0/2.7-mm VCP and 2-mm screws were used in all cases. The median length of the VCP was 12 holes, and the median number of screws placed in the plate was 6. The median number of cortices engaged per fragment was 6. Ninety-nine percent of the screws were bicortical. Quadriceps contracture was an unacceptable functional outcome in one cat. Follow-up was available in 20 cases. Complete bone healing was assessed in 16/20 cases with a functional outcome considered as full in 17/20, acceptable in 2/20, and unacceptable in 1/20. Telephonic owner outcome assessment was available for five more cats and was considered as full in all cases.
Clinical Significance The VCP-rod construct is effective to manage all configurations of diaphyseal femoral fracture in cats. The high amount of screw holes per unit length of a VCP allows bicortical screws placement without interfering with the intramedullary rod.
Author Contributions
Bertrand Vedrine contributed to conception of study, study design, and acquisition of data and data analysis and interpretation. Fabien Gérard contributed to acquisition of data and data analysis and interpretation. All authors drafted, revised and approved the submitted manuscript.
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References
- 1 Whitehair JG, Vasseur PB. Fractures of the femur. Vet Clin North Am Small Anim Pract 1992; 22 (01) 149-159
- 2 Guiot LP, Demianiuk RM, Déjardin LM. Fractures of the femur. In: Tobias KM, Johnston SA. , eds. Veterinary Surgery Small Animal. 1st ed. Philadelphia, PA: Saunders; 2012: 882-883
- 3 Piermattei DL, Flo GL, DeCamp CE. Fractures of the femur and patella. In: Piermattei DL, Flo GL, DeCamp CE. , eds. Small Animal Orthopedics and Fracture repair. 4th ed. Saint Louis, MO: Saunders; 2006: 512-561
- 4 Beale B. Orthopedic clinical techniques femur fracture repair. Clin Tech Small Anim Pract 2004; 19 (03) 134-150
- 5 Hulse D, Hyman W, Nori M, Slater M. Reduction in plate strain by addition of an intramedullary pin. Vet Surg 1997; 26 (06) 451-459
- 6 Hulse D, Ferry K, Fawcett A. , et al. Effect of intramedullary pin size on reducing bone plate strain. Vet Comp Orthop Traumatol 2000; 13(4): 185-190
- 7 Johnson AL, Smith CW, Schaeffer DJ. Fragment reconstruction and bone plate fixation versus bridging plate fixation for treating highly comminuted femoral fractures in dogs: 35 cases (1987-1997). J Am Vet Med Assoc 1998; 213 (08) 1157-1161
- 8 Stiffler KS. Internal fracture fixation. Clin Tech Small Anim Pract 2004; 19 (03) 105-113
- 9 Könning T, Maarschalkerweerd RJ, Endenburg N, Theyse LFH. A comparison between fixation methods of femoral diaphyseal fractures in cats - a retrospective study. J Small Anim Pract 2013; 54 (05) 248-252
- 10 Pearson T, Glyde M, Hosgood G, Day R. The effect of intramedullary pin size and monocortical screw configuration on locking compression plate-rod constructs in an in vitro fracture gap model. Vet Comp Orthop Traumatol 2015; 28 (02) 95-103
- 11 Reems MR, Beale BS, Hulse DA. Use of a plate-rod construct and principles of biological osteosynthesis for repair of diaphyseal fractures in dogs and cats: 47 cases (1994-2001). J Am Vet Med Assoc 2003; 223 (03) 330-335
- 12 Guiot LP, Déjardin LM. Prospective evaluation of minimally invasive plate osteosynthesis in 36 nonarticular tibial fractures in dogs and cats. Vet Surg 2011; 40 (02) 171-182
- 13 Morris AP, Anderson AA, Barnes DM. , et al. Plate failure by bending following tibial fracture stabilisation in 10 cats. J Small Anim Pract 2016; 57 (09) 472-478
- 14 Larin A, Eich CS, Parker RB, Stubbs WP. Repair of diaphyseal femoral fractures in cats using interlocking intramedullary nails: 12 cases (1996-2000). J Am Vet Med Assoc 2001; 219 (08) 1098-1104
- 15 Brüse S, Dee J, Prieur WD. Internal fixation with a veterinary cuttable plate in small animals. Vet Comp Orthop Traumatol 1989; 1: 40-46
- 16 Cabassu JP. Elastic plate osteosynthesis of femoral shaft fractures in young dogs. Vet Comp Orthop Traumatol 2001; 14: 40-45
- 17 Sarrau S, Meige F, Autefage A. Treatment of femoral and tibial fractures in puppies by elastic plate osteosynthesis. A review of 17 cases. Vet Comp Orthop Traumatol 2007; 20 (01) 51-58
- 18 Field EJ, Parsons K, Etches JA, Hamilton K, Burton NJ. Effect of monocortical and bicortical screw numbers on the properties of a locking plate-intramedullary rod configuration. An in vitro study on a canine femoral fracture gap model. Vet Comp Orthop Traumatol 2016; 29 (06) 459-465
- 19 Delisser PJ, McCombe GP, Trask RS. , et al. Ex vivo evaluation of the biomechanical effect of varying monocortical screw numbers on a plate-rod canine femoral gap model. Vet Comp Orthop Traumatol 2013; 26 (03) 177-185
- 20 Niederhäuser SK, Tepic S, Weber UT. Effect of screw position on single cycle to failure in bending and torsion of a locking plate-rod construct in a synthetic feline femoral gap model. Am J Vet Res 2015; 76 (05) 402-410
- 21 Matres-Lorenzo L, Diop A, Maurel N, Boucton MC, Bernard F, Bernardé A. Biomechanical comparison of locking compression plate and limited contact dynamic compression plate combined with an intramedullary rod in a canine femoral fracture-gap model. Vet Surg 2016; 45 (03) 319-326
- 22 Goh CS, Santoni BG, Puttlitz CM, Palmer RH. Comparison of the mechanical behaviors of semicontoured, locking plate-rod fixation and anatomically contoured, conventional plate-rod fixation applied to experimentally induced gap fractures in canine femora. Am J Vet Res 2009; 70 (01) 23-29
- 23 Tremolada G, Lewis DD, Paragnani KL, Conrad BP, Kim SE, Pozzi A. Biomechanical comparison of a 3.5-mm conical coupling plating system and a 3.5-mm locking compression plate applied as plate-rod constructs to an experimentally created fracture gap in femurs of canine cadavers. Am J Vet Res 2017; 78 (06) 712-717
- 24 Rutherford S, Demianiuk RM, Benamou J, Beckett C, Ness MG, Déjardin LM. Effect of intramedullary rod diameter on a string of pearls plate-rod construct in mediolateral bending: an in vitro mechanical study. Vet Surg 2015; 44 (06) 737-743
- 25 Fox DB, Tomlinson JL. Principles of angular limb deformity correction. In: Tobias KM, Johnston SA. , eds. Veterinary Surgery Small Animal. 1st ed. Saint Louis, MO: Saunders; 2012: 657-668
- 26 Swanson EA, Tomlinson JL, Dismukes DI, Fox DB. Measurement of femoral and tibial joint reference angles and pelvic limb alignment in cats. Vet Surg 2012; 41 (06) 696-704
- 27 Chao P, Lewis DD, Kowaleski MP, Pozzi A. Biomechanical concepts applicable to minimally invasive fracture repair in small animals. Vet Clin North Am Small Anim Pract 2012; 42 (05) 853-872
- 28 Cook JL, Evans R, Conzemius MG. , et al. Proposed definitions and criteria for reporting time frame, outcome, and complications for clinical orthopedic studies in veterinary medicine. Vet Surg 2010; 39 (08) 905-908
- 29 Johnson AL, Houlton JEF, Vannini R. AO Principles of Fracture Management in the Dog and Cat. Davos Platz, Switzerland: AO Publishing; 2005
- 30 ElMaraghy AW, ElMaraghy MW, Nousiainen M, Richards RR, Schemitsch EH. Influence of the number of cortices on the stiffness of plate fixation of diaphyseal fractures. J Orthop Trauma 2001; 15 (03) 186-191