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Vet Comp Orthop Traumatol 2014; 27(01): 74-79
DOI: 10.3415/VCOT-13-01-0007
Case Report
Schattauer GmbH

Hinged circular fixator construct for correction of congenital metatarsal deformity in a foal

E. G. Porter
1   Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
,
L. C. Cuddy
1   Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
,
A. S. Graham
2   Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
,
D. J. Reese
1   Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
,
M. B. Porter
3   PhD Veterinary Services, Alachua, Florida, USA
,
A. J. Morton
2   Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
,
D. D. Lewis
1   Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
› Author Affiliations
Further Information

Publication History

Received 11 January 2013

Accepted 01 October 2013

Publication Date:
19 December 2017 (online)

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Summary

A five-week-old American Quarter Horse colt was presented for evaluation of a left hindlimb deformity and lameness. Radiographs of the left hindlimb revealed a varus deformity with recurvatum originating in the middiaphysis of the third metatarsal bone. Surgical correction was undertaken by performing an osteotomy through the centre of rotation of angulation located within the mid-diaphysis of the third metatarsal bone, and a fourring hinged circular external fixator construct was applied. Distraction of the osteotomy site was performed over an 11 day period. Notable complications included failure of a fixation pin, infection of the surgical site, and temporary laxity of the supporting tendons and ligaments of the contralateral metatarsophalangeal joint. The fixator was maintained until there was sufficient bone formation to allow frame removal, 152 days after the initial surgery. Use of a hinged circular construct allowed for partial correction of the deformity with resultant lengthening and resolution of the lameness in this colt.

Keywords

Distraction osteogenesis - horse - external - fixator - congenital metatarsal deformity
 

  • References

  • 1 Fretz PB. Angular limb deformities in foals. Vet Clin N Am Large 1980; 2: 125-150.
    PubMedGoogle Scholar
  • 2 Auer JA. Angular limb deformities. In: Auer JA, Stick JA. editors. Equine Surgery. St. Louis: Saunders Elsevier; 2006. pg. 2006-1130.
    Google Scholar
  • 3 Marcellin-Little DJ, Ferretti A, Roe SC. Hinged Ilizarov external fixation for correction of antebrachial deformities. Vet Surg 1998; 27: 231-245.
    CrossrefPubMedGoogle Scholar
  • 4 Theyse LF, Voorhout G, Hazewinkel HA. Prognostic factors in treating antebrachial growth deformities with a lengthening procedure using a circular external skeletal fixation system in dogs. Vet Surg 2005; 34: 424-435.
    CrossrefPubMedGoogle Scholar
  • 5 Lewis DD, Radasch RM, Beale BS. et al. Initial clinical experience with the IMEX™ circular external skeletal fixation system - Part II: use in bone lengthening and correction of angular and rotational deformities. Vet Comp Orthop Traumatol 1999; 12: 118-127.
    Article in Thieme ConnectPubMedGoogle Scholar
  • 6 Eggleston RB, Mueller PO, Chambers JN. et al. Use of an external ring fixator for correction of an acquired angular limb deformity in a donkey. J Am Vet Med Assoc 2000; 217: 1186-1190.
    CrossrefPubMedGoogle Scholar
  • 7 Definition and classification of lameness. In: American Association of Equine Practitioners. Guide for Veterinary Service and Judging of Equestrian Events. Lexington, KY: AAEP; 1991. pg. 19.
    Google Scholar
  • 8 Johnson AL. Fundamentals of orthopedic surgery and fracture management. In: Fossum TW. editor. Small Animal Surgery. St. Louis: Elsevier; 2013. pg. 2013-1033.
    Google Scholar
  • 9 Welch RD, Lewis DD. Distraction osteogenesis. Vet Clin N Am Small 1999; 29: 1187-1205.
    PubMedGoogle Scholar
  • 10 Choate CJ, Radasch RM, Lewis DD. Postoperative management of external fixators in dogs and cats. Vet Med 2011; 106: 90-98.
    PubMedGoogle Scholar
  • 11 Bramlage LR. Long bone fractures. Vet Clin N Am Large Anim 1983; 5: 285-310.
    PubMedGoogle Scholar
  • 12 Redden RF. Preventing laminitis in the contralateral limb of horses with nonweight-bearing lameness. Clin Tech Equine P 2004; 3: 57-63.
    PubMedGoogle Scholar
  • 13 Jukema GN, Settner M, Dunkelmann G. et al. High stability of the Ilizarov ringfixator in a metacarpal fracture of an arabian foal. Arch Orthop Traum Surg 1997; 116: 287-289.
    PubMedGoogle Scholar
  • 14 Forriol F, Denaro L, Longo UG. et al. Bone lengthening osteogenesis, a combination of intramembranous and endochondral ossification: an experimental study in sheep. Strategies Trauma Limb Reconstr 2010; 5: 71-78.
    CrossrefPubMedGoogle Scholar
  • 15 Kojimoto H, Yasui N, Goto T. et al. Bone lengthening in rabbits by callus distraction. The role of periosteum and endosteum. J Bone Joint Surg Br 1988; 70: 543-549.
    PubMedGoogle Scholar
  • 16 Ohyama M, Miyasaka Y, Sakurai M. et al. The mechanical behavior and morphological structure of callus in experimental callotasis. Biomed Mater 1994; 4: 273-281.
    PubMedGoogle Scholar
  • 17 McCartney WT. Limb lengthening in three dogs using distraction rates without a latency period. Radius/ulna, tibia, femur. Vet Comp Orthop Traumatol 2008; 21: 446-450.
    Article in Thieme ConnectPubMedGoogle Scholar
  • 18 Anderson GM, Lewis DD, Radasch RM. et al. Circular external skeletal fixation stabilization of antebrachial and crural fractures in 25 dogs. J Am Anim Hosp Assoc 2003; 39: 479-498.
    CrossrefPubMedGoogle Scholar
  • 19 Bignozzi L, Gnudi M, Masetti L. et al. Half pin fixation in 2 cases of equine long bone fracture. Equine Vet J 1981; 13: 64-66.
    CrossrefPubMedGoogle Scholar
  • 20 Hall MM, Finnoff JT, Smith J. Musculoskeletal complications of fluoroquinolones: guidelines and precautions for usage in the athletic population. PM R 2011; 3: 132-142.
    CrossrefPubMedGoogle Scholar
  • 21 Yoon JH, Brooks Jr. RL, Khan A. et al. The effect of enrofloxacin on cell proliferation and proteoglycans in horse tendon cells. Cell Biol Toxicol 2004; 20: 41-54.
    CrossrefPubMedGoogle Scholar
  • 22 Cervantes C, Madison JB, Miller GJ. et al. An in vitro biomechanical study of a multiplanar circular external fixator applied to equine third metacarpal bones. Vet Surg 1996; 25: 1-5.
    CrossrefPubMedGoogle Scholar