Download PDF
Vet Comp Orthop Traumatol 2009; 22(04): 328-331
DOI: 10.3415/VCOT-08-10-0102
Case Report
Schattauer GmbH

Traumatic fragmented medial coronoid process in a Chihuahua

H. S. Hadley
1   Wheat Ridge Veterinary Specialists, Wheat Ridge, Colorado, USA
,
J. L. Wheeler
1   Wheat Ridge Veterinary Specialists, Wheat Ridge, Colorado, USA
,
P. A. Manley
2   University of Wisconsin, School of Veterinary Medicine, Madison, Wisconsin, USA
› Author Affiliations
Further Information

Publication History

Received:21 October 2008

Accepted:17 January 2009

Publication Date:
18 December 2017 (online)

    Permissions and Reprints

Summary

Fragmented medial coronoid process (FMCP) is a disease process that has not previously been reported in toy-breed dogs. This report describes a presumptive case of FMCP in a 14-month-old Chihuahua that was presented for evaluation approximately four weeks following acute onset of moderate lameness in the left forelimb. Definitive diagnosis of a fragmented medial coronoid process was based upon computed tomography (CT) scan. A CT scan also demonstrated moderate joint incongruity in the affected elbow. Surgical removal of the fragment and subtotal coronoidectomy were performed via a medial arthrotomy. An ulnar ostectomy was also performed to address joint incongruity. Histology of specimens removed at surgery did not demonstrate evidence of microdamage as characteristic of FMCP in large breed dogs, and instead, suggested that the fracture was acute and traumatic in nature. Rapid return to function was observed following surgery.

Keywords

Fragmented medial coronoid process - traumatic fracture - jump-down syndrome
 

  • References

  • 1 Olsson SE. Osteochondrosis – a growing problem to dog breeders. Gaines Progress: Gaines Dog Research Center; 1976: 1-11.
    Google Scholar
  • 2 Wind AP. Elbow incongruity and developmental elbow diseases in the dog: part I. J Am Anim Hosp Assoc 1986; 22: 711-724.
    PubMedGoogle Scholar
  • 3 Olsson SE. The early diagnosis of fragmented coronoid process and osteochondritis dissecans of the canine elbow joint. J Am Anim Hosp Assoc 1983; 19: 616-626.
    PubMedGoogle Scholar
  • 4 Morgan JP, Wind AP, Davidson J. Elbow dysplasia. In: Hereditary Bone and Joint Diseases in the Dog. Schlutersche 2000: 41-68.
    Google Scholar
  • 5 Morgan JP, Wind AP, Davidson J. Bone dysplasias in the Labrador retriever: a radiographic study. J Am Anim Hosp Assoc 1999; 35: 332-340.
    CrossrefPubMedGoogle Scholar
  • 6 LaFond E, Breur GJ, Austin CC. Breed susceptibility for developmental orthopedic diseases in dogs. J Am Anim Hosp Assoc 2002; 38: 467-477.
    CrossrefPubMedGoogle Scholar
  • 7 Trostel CT, McLaughlin RM, Pool RR. Canine lameness caused by developmental orthopedic diseases: fragmented medial coronoid process and ununited anconeal process. Compend Contin Educ Veterinarian Pract Vet 2003; 25: 112-121.
    PubMedGoogle Scholar
  • 8 Trostel CT, Pool RR. Canine Elbow Dysplasia: Incidence, Diagnosis, Treatment, and Prognosis. Com-pend Contin Educ Veterinarian Pract Vet 2003; 25: 763-772.
    PubMedGoogle Scholar
  • 9 Slatter D. Fragmentation of the Medial Portion of the Medial Coronoid Process. In: Textbook of Small Animal Surgery, edition 3, vol 2. Saunders, Elsevier Science. 2003: 1943-1952.
    PubMedGoogle Scholar
  • 10 Grondalen J, Grondalen T. Arthrosis in the elbow joint of young rapidly growing dogs (V): A pathoanatomical investigation. Nordisk Veterinaermedicin 1981; 33: 1-16.
    PubMedGoogle Scholar
  • 11 Trostel CT, McLaughlin RM, Pool RR. Canine Elbow Dysplasia. Anatomy and Pathogenesis. Com-pend Contin Educ Veterinarian Pract Vet 2003; 25: 754-762.
    PubMedGoogle Scholar
  • 12 Guthrie S, Plummer JM, Vaughan LC. Aetiopatho-genesis of canine elbow osteochondrosis: a study of loose fragments removed at arthrotomy. Res Vet Sci 1992; 52: 284-291.
    CrossrefPubMedGoogle Scholar
  • 13 Danielson KC, Fitzpatrick N, Muir P. et al. Histomorphometry of Fragmented Medial Coronoid Process in Dogs: A Comparison of Affected and Normal Coronoid Processes. Vet Surg 2006; 35: 501-509.
    CrossrefPubMedGoogle Scholar
  • 14 Berson JL, Quick CB. Fragmented Coronoid Process: Anatomical, Clinical, and Radiographic Considerations with Case Analysis. J Am Anim Hosp Assoc 1980; 16: 241-251.
    PubMedGoogle Scholar
  • 15 Marcellin-Little DJ, DeYoung DJ, Ferris KK. et al. Incomplete ossification of the humeral condyle in spaniels. Vet Surg 1994; 23: 475-487.
    CrossrefPubMedGoogle Scholar
  • 16 Haudiquet PH, Rochereau PH. A specific oblique radiography, and treatment, of a medial coronoid process fracture. Vet Comp Orthop Traumatol 2007; 20: 331-334.
    Article in Thieme ConnectPubMedGoogle Scholar
  • 17 Gortz K, Van Ryssen B, Taeymans O. et al. Traumatic fracture of the medial coronoid process in a dog. Vet Comp Orthop Traumatol 2004; 17: 159-162.
    Article in Thieme ConnectPubMedGoogle Scholar
  • 18 Yovich JC, Read RA. Traumatic fracture of the medial coronoid process in two dogs. Vet Comp Orthop Traumatol 1994; 7: 173-176.
    Article in Thieme ConnectPubMedGoogle Scholar
  • 19 Canapp SO, Hulse D. Jump Down Syndrome. Clean Run 2008 April 76-78.
    PubMedGoogle Scholar
  • 20 Piermattei DL. Approach to the Medial Aspect of the Humeral Condyle and the Medial Coronoid Process of the Ulna by an Intermuscular Incision. In: Surgical approaches to the bones and joints of the dog and cat, 3rd ed. WB Saunders Company; 1993: 178-181.
    Google Scholar
  • 21 Henry WB. Radiographic diagnosis and surgical management of fragmented medial coronoid process in dogs. J Am Vet Med Assoc 1984; 184: 799-805.
    PubMedGoogle Scholar
  • 22 Rovesti GL, Biasibetti M, Schumacher A, Fabiani M. The use of computed tomography in the diagnostic protocol of the elbow in the dog. Vet Comp Orthop Tramatol 2002; 15: 35-43.
    PubMedGoogle Scholar
  • 23 Boulay JP. Fragmented medial coronoid process of the ulna in the dog. Veterinary Clinics of North America 1998; 28: 51-74.
    CrossrefPubMedGoogle Scholar
  • 24 Gemmill TJ, Clements DN. Fragmented coronoid process in the dog: is there a role for incongruency?. J Small Anim Pract 2007; 48: 361-368.
    CrossrefPubMedGoogle Scholar
  • 25 Preston CA, Schulz KS, Taylor KS. et al. In vitro experimental study of the effect of radial shortening and ulnar ostectomy on contact patterns in the elbow joint of dogs. Am J Vet Res 2001; 62: 1548-1556.
    CrossrefPubMedGoogle Scholar
  • 26 Wind AP. Incidence and appearance of fragmented coronoid process in the Bernese Mountain dog. California Vet 1982; 6: 19-26.
    PubMedGoogle Scholar
  • 27 Hak DJ, Hamel AJ, Bay BK. et al. Consequences of transverse acetabular fracture malreduction on load transfer across the hip joint. J Orthop Trauma 1998; 12: 90-100.
    CrossrefPubMedGoogle Scholar
  • 28 Burr DB, Turner CH, Naick P. et al. Does microdamage affect the mechanical properties of bone?. J Biomech 1998; 31: 337-345.
    CrossrefPubMedGoogle Scholar
  • 29 Verborgt O, Gibson GJ, Schaffler MB. Loss of Osteocyte Integrity in Association with Microdamage and Bone Remodeling After Fatigue In Vivo. J Bone Miner Res 2000; 15: 60-67.
    CrossrefPubMedGoogle Scholar
  • 30 Norman TL, Little TM, Yeni YN. Age-related changes in porosity and mineralization and in-service damage accumulation. J Biomech 2008; 41: 2868-2873.
    CrossrefPubMedGoogle Scholar
  • 31 Aro HT, Wippermann BW, Hodgson SF, Chao EY. et al. Internal remodeling of periosteal new bone during fracture healing. J Orthop Res 1990; 8: 238-46.
    CrossrefPubMedGoogle Scholar
  • 32 Sietsema WK. Animal Models of Cortical Porosity. Bone 1995; 17: 297S-305S.
    PubMedGoogle Scholar