Vet Comp Orthop Traumatol 2001; 14(03): 156-160
DOI: 10.1055/s-0038-1632691
Case Report
Schattauer GmbH

Mandibular lengthening in a juvenile camel by distraction osteogenesis

A. M. Cruz
1   Veterinary Teaching Hospital, Toronto, Canada
,
M. B. Hurtig
2   Department of Clinical Studies, Toronto, Canada
,
D. Whiteside
3   Ontario Veterinary College, University of Guelph and the Metro Toronto Zoo, Toronto, Canada
,
K. Mehren
3   Ontario Veterinary College, University of Guelph and the Metro Toronto Zoo, Toronto, Canada
› Author Affiliations
The authors would like to thank Dr. Robert Welch for his assistance with the management of this case. Also they would like to acknowledge Imex ™ Veterinary Inc. for its co-operation providing the necessary instrumentation.
Further Information

Publication History

Received 20 November 2000

Accepted 19 February 2001

Publication Date:
09 February 2018 (online)

Summary

A three-year old bactrian camel was surgically treated by means of distraction osteogenesis for the correction of a severe mandibular brachygnathia. The mandible was osteotomized in two fragments at the diastema. An external fixator frame, composed of five 1/3rd rings connected by three connecting bars and two transporting rods, was used to achieve stability and optimize sequential fragment distraction during bone healing. After a period of four months, adequate healing had occurred and 35 mm of new bone had formed. Although a significant lengthening was accomplished, the final result was not optimal. We describe the technique used and discuss the suitability and limitations of this technique for its use in large animals.

Mandibular lengthening by means of distraction osteogenesis is described in a juvenile camel. Bone lengthening was accomplished over a period of time making this technique suitable for large animal species. However structural adjustments to the external lengthening device are necessary to obtain optimal results.

 
  • REFERENCES

  • 1 Califano L, Cortese A, Zupi A. et al. Mandibular lengthening by external distraction: an experimental study in the rabbit. J Oral Maxillofac Surg 1994; 52: 1179-83.
  • 2 Cope JB, Samchukov ML, Cherkashin AM. Mandibular distraction osteogenesis: A historic perspective and future directions. Am J Orthod Dentofacial Orthop 1999; 115: 448-60.
  • 3 Davies J, Turner S, Sandy JR. Distraction osteogenesis - a review. Br Dental J 1998; 185: 462-7.
  • 4 Gift LJ, DeBowes RM, Clem MF. et al. Brachygnathia in horses: 20 cases (1979 to 1989). J Am Vet Med Ass 1992; 200: 715-9.
  • 5 Heidari M, Vogt DW, Nelson SL. Brachygnathia in a herd of angus cattle. Am J Vet Res 1985; 46: 708-10.
  • 6 Ilizarov GA. The tension-stress effect on the genesis and growth of tissues: Part II. The influence of rate and frequency of distraction. Clin Orthop 1989; 239: 263-85.
  • 7 Lewis DD, Radasch RM, Beale BS. et al. Initial clinical experience with the IMEX TM circular external skeletal fixation system. Vet Comp Ortho Traumatol 1999; 12: 118-27.
  • 8 Marcellin-Little DJ, Ferretti A, Roe SC. et al. Hinged Ilizarov external fixation for correction of antebrachial deformities. Vet Surg 1998; 27: 231-45.
  • 9 McCarthy JG, Schreiber J, Karp N. et al. Lengthening the human mandible by gradual distraction. Plast Reconstr Surg 1992; 89: 1-8.
  • 10 Panjaba MM, Walter SD, Karuda M. et al. Correlations of radiographic analysis of healing fractures with strength: a statistical analysis of experimental osteotomies. J Orthop Res 1985; 03: 212-8.
  • 11 Samchukov ML, Cope JB, Harper RP. et al. Biomechanical considerations of mandibular lengthening and widening by gradual distraction using a computer model. J Oral Maxillofac Surg 1998; 56: 51-9.
  • 12 Welch RD, Lewis DD. Distraction osteogenesis. Vet Clin North Am Sm Anim Pract 1999; 29: 1187-205.
  • 13 Welch RD, Birch JG, Samchukov ML. Histomorphology of distraction osteogenesis in a caprine tibial lengthening model. J Bone Miner Res 1998; 13: 1-9.
  • 14 Yanoff SR, Hulse DA, Palmer RH. et al. Distraction osteogenesis using modified external fixation devices in five dogs. Vet Surg 1992; 21: 480-7.