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Vet Comp Orthop Traumatol 2007; 20(04): 256-263
DOI: 10.1160/VCOT-07-04-0035
Original Research
Schattauer GmbH

‘Dowel’ pinning for feline metacarpal and metatarsal fractures

K. Zahn
1   Veterinary Surgery Clinic, Ludwig-Maximilians-University of Munich, Germany
,
M. Kornmayer
1   Veterinary Surgery Clinic, Ludwig-Maximilians-University of Munich, Germany
,
U. Matis
1   Veterinary Surgery Clinic, Ludwig-Maximilians-University of Munich, Germany
› Author Affiliations
Further Information

Publication History

Received 06 April 2007

Accepted 30 July 2007

Publication Date:
18 December 2017 (online)

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Summary

The goal of this retrospective study was to describe dowel pinning, and to compare the results of osteosynthesis and external coaptation of metacarpal and metatarsal fractures in cats. Evaluation of the medical records of 351 cats yielded 63 cats treated with dowel pinning, 35 cats treated with external coaptation and 14 cats treated with both methods within the same limb. All of the cats had been re-evaluated at an average of 2.8 years (six months – 15 years) postoperatively. Dowel pinning was superior to external coaptation when all fractured bones of a limb could be pinned. When internal fixation of multiple fractures was not feasible in all fractured bones due to comminution or fragments that were too short to pin, the outcome was not significantly different from cases treated with external coaptation alone. Malunion was seen in 16% of fractured bones in cats treated with external coaptation and occurred secondary to implant bending in 3% of fractured bones treated with dowel pinning. The latter refers to one operated cat, which had four metacarpal fractures in the same limb. Radiographs taken at re-evaluation showed implant migration within the medullary canal in two cats, although neither showed any signs of non-union or lameness. Non-union was seen in one operated cat, in which the fracture (MC IV) could not be completely reduced with a K-wire. Osteomyelitis did not occur. Dowel pinning is an easy, inexpensive and effective technique for repair of metacarpal and metatarsal fractures in cats.

Keywords

Cat - fracture - metacarpus - metatarsus
 

  • References

  • 1 Zahn K, Kornmayer M, Matis U. Metacarpal and metatarsal fractures in cats. Vet Comp Orthop Traumatol. 2006 19. A59.
    PubMedGoogle Scholar
  • 2 Bellenger CR, Johnson KA, Davis PE. et al. Fixation of metacarpal and metatarsal fractures in greyhounds. Aus Vet J 1981; 57: 205-211.
    CrossrefPubMedGoogle Scholar
  • 3 Losslein LK. Metakarpalund Metatarsalfrakturen bei Hund und Katze. Behandlung und Ergebnisse in den Jahren 1975-1981. Thesis, LMU Munich 1982
    PubMedGoogle Scholar
  • 4 Whitney WO, Mehlhaff CJ. High-rise syndrome in cats. J Am Vet Med Assoc 1987; 191: 1399-1403.
    PubMedGoogle Scholar
  • 5 Anderson MA, Payne JT, Constantinescu GM. Managing fractures and related injuries of the distal extremities in dogs and cats. Vet Med 1993; 88: 957-968.
    PubMedGoogle Scholar
  • 6 Muir Muir, Norris JL. Metacarpal andmetatarsal fractures in dogs. J Small Anim Pract. 1997 38. 344.
    PubMedGoogle Scholar
  • 7 Okumura M, Watanabe K, Kadosawa T. et al. Surgical salvage from comminuted metatarsal fracture using aweight-bearing pin-putty apparatus in adog. Aus Vet J 2000; 78: 95-98.
    CrossrefPubMedGoogle Scholar
  • 8 Earley Earley, Dee JF. Trauma to the carpus, tarsus and phalanges of dogs and cats. Vet Clin North Am Small Anim 1980; 10: 717-747.
    PubMedGoogle Scholar
  • 9 Benedetti LT, Berry K, Bloomberg M. A technique for intramedullary pinning of metatarsals and metacarpals in cats and dogs. J Am Anim Hosp Assoc 1986; 22: 149-152.
    PubMedGoogle Scholar
  • 10 Dee JF. Fractures ofthe metacarpal and metatarsal bones. In: Johnson AL, Houlton JEF, Vannini R. (eds). AO Principles of fracure management in the dog and cat. New York: Thieme; 2005: 360-370.
    Google Scholar
  • 11 Manley PA. Distal extremity fractures in small animals. J Vet Orthop 1981; 2: 38-48.
    PubMedGoogle Scholar
  • 12 Wind A. Fractures of the metacarpal (metatarsal) bones. Proc Am Anim Hosp Assoc. 1976 43. 346.
    PubMedGoogle Scholar
  • 13 Gentry SJ, Taylor RA, Dee JF. The use of veterinary cuttable plates: 21 cases. J Am Anim Hosp Assoc 1993; 29: 455-459.
    PubMedGoogle Scholar
  • 14 von Werthern CJ, Bernasconi CE. Application of the maxillofacial mini-plate Compact 1.0 in the fracture repair of 12 cats/2 dogs. Vet Comp Orthop Traumatol 2000; 13: 92-96.
    Article in Thieme ConnectPubMedGoogle Scholar
  • 15 Kapatkin A, Howe-Smith R, Shofer F. Conservative versus surgical treatment of metacarpal and metatarsal fractures in dogs. Vet Comp Orthop Traumatol 2000; 13: 123-127.
    Article in Thieme ConnectPubMedGoogle Scholar
  • 16 Degasperi B, Gradner G, Dupre G. Intramedullary pinning of metacarpal and metatarsal fractures in cats using a simple distraction technique. Vet Surg 2007; 36: 382-388.
    CrossrefPubMedGoogle Scholar
  • 17 Caliebe F, Haubetaler J, Hoffmann P. et al. Cat distal forelimb joints and locomotion: an X-ray study. Eur J Neurosci 1991; 3: 18-31.
    CrossrefPubMedGoogle Scholar
  • 18 Vollmerhaus B, Roos H, Brugger S. Anatomische Grundlagen und arttypische Bewegungen im Ellbogengelenk und proximalen Radioulnarge- lenk der Hauskatze. Tierarztl Prax 1993; 21: 163-171.
    PubMedGoogle Scholar
  • 19 Muir P, Johnson KA, Markel MD. Areamoment of inertia for comparison of implant cross-sectional geometry and bending stiffness. Vet Comp Orthop Traumatol 1995; 8: 146-152.
    Article in Thieme ConnectPubMedGoogle Scholar
  • 20 Perren SM, Cordey J, Rahn BA. et al. Early temporary porosis of bone induced by internal fixation implants. Clin OrthopedRel Res 1988; 232: 139-151.
    PubMedGoogle Scholar