Use of transilial pinning for the treatment of sacroiliac separation in 25 dogs and finite element analysis of repair methods

W. T. McCartney; D. Comiskey; B. MacDonald

doi:10.1055/s-0037-1616586

Veterinary and Comparative Orthopaedics and Traumatology, Inhaltsverzeichnis

Vet Comp Orthop Traumatol 2007; 20(01): 38-42
DOI: 10.1055/s-0037-1616586

Original Research

Schattauer GmbH

Use of transilial pinning for the treatment of sacroiliac separation in 25 dogs and finite element analysis of repair methods

W. T. McCartney

¹Marie Louise Veterinary Hospital, Baldoyle, Dublin, Republic of Ireland

²Medical Device and Orthpaedic Research Centre (MDORC), School of Mechanical Medical and Manufacturing Engineering, Dublin City University, Glasnevin, Dublin, Republic of Ireland

,

D. Comiskey

²Medical Device and Orthpaedic Research Centre (MDORC), School of Mechanical Medical and Manufacturing Engineering, Dublin City University, Glasnevin, Dublin, Republic of Ireland

,

B. MacDonald

²Medical Device and Orthpaedic Research Centre (MDORC), School of Mechanical Medical and Manufacturing Engineering, Dublin City University, Glasnevin, Dublin, Republic of Ireland

› Institutsangaben

Abstract

Summary

A retrospective study of 25 cases of sacroiliac separation showed that transilial pinning is an effective method of repair for sacroiliac separations. Only 8% of cases of sacroiliac separation had transilial pinning as the sole surgical intervention as other concomitant minor injuries, such as fractured ischium or pubis, did not require surgery. Even though pin loosening and migration along with local soft tissue irritation occurred in all cases, 92% of the cases had ‘good’ or ‘excellent’ outcomes. Sacroiliac separation heals by fibrosis, not directly by bone healing, and therefore can heal sufficiently in four weeks to allow pain free weight bearing in four weeks. Additionally, finite element modelling was undertaken to analyse micro-movement of repaired sacroiliac separations. The micro-motion analysis showed that the lag screw fixation method was more stable than the transilial fixation method since the relative motion between the two indicated that the latter allowed more unsupported iliac movement.

Keywords

Sacroiliac - transilial pinning - finite element analysis

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Referenzen

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