An ovine model for total hip replacement: operative procedure and complications

J. R. Field; H. Aberman; A. Carbone; P. Sharpe; N. Smith; D. Dunlop; D. W. Howie

doi:10.1055/s-0038-1632670

Veterinary and Comparative Orthopaedics and Traumatology, Table of Contents

Vet Comp Orthop Traumatol 2001; 14(01): 32-39
DOI: 10.1055/s-0038-1632670

Clinical Communications

Schattauer GmbH

An ovine model for total hip replacement: operative procedure and complications

Authors

J. R. Field

¹Department of Orthopedics and Trauma, Royal Adelaide Hospital, North Terrace, and Institute of Medical and Veterinary Science, Adelaide, South Australia, Australia
H. Aberman

²Howmedica Inc., Rutherford, New Jersey, USA
A. Carbone

¹Department of Orthopedics and Trauma, Royal Adelaide Hospital, North Terrace, and Institute of Medical and Veterinary Science, Adelaide, South Australia, Australia
P. Sharpe

¹Department of Orthopedics and Trauma, Royal Adelaide Hospital, North Terrace, and Institute of Medical and Veterinary Science, Adelaide, South Australia, Australia
N. Smith

³Howmedica Inc., Staines, Middlesex, UK
D. Dunlop

⁴Princess Margaret Rose Hospital, Edinburgh, Scotland
D. W. Howie

¹Department of Orthopedics and Trauma, Royal Adelaide Hospital, North Terrace, and Institute of Medical and Veterinary Science, Adelaide, South Australia, Australia

Abstract

Summary

A cranio-lateral curvilinear incision in the skin was centered over the greater trochanter. The subsequent approach to the acetabulum involved blunt dissection and avoided the need for significant muscular incision. The major post-operative complications encountered were fracturing of the proximal (2/37) and distal femur (4/37), caudal neuropathy (2/37) and septic femoral stem loosening (1/37). At two years post-operatively, the morbidity rate was 24% and the mortality rate 19%.

A regime of analgesia, involving constant infusion of xylazine, was developed and appeared very effective.

Thirty-seven mature Merino wethers were utilized for an evaluation of a new acetabular cup design using a modular cemented total hip replacement system. The ovine model for total hip replacement provided a reliable and manageable method for the evaluation of component design and tissue response.

Keywords

Total hip replacement - sheep model

Full Text

References

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