Total Hip Replacement with Dorsal Acetabular Rim Augmentation Using the SOPTM Implant and Polymethylmethacrylate Cement in Seven Dogs with Dorsal Acetabular Rim Deficiency

Authors

  • Noel Fitzpatrick DUniv MVB CertSAO CertVR,

    Corresponding author
    1. Fitzpatrick Referrals, Eashing, Surrey, UK
    • Corresponding Author

      Noel Fitzpatrick, DUniv MVB CertSAO CertVR, Fitzpatrick Referrals, Halfway Lane, Eashing, Surrey GU7 2QQ, UK

      E-mail: noel@fitzpatrickreferrals.co.uk

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  • Malgorzata Bielecki Mag. med. vet,

  • Russell Yeadon MA VetMB CertSAS,

  • Michael Hamilton BVM&S CertSAS Diplomate ECVS


Abstract

Objective

To describe a surgical technique for reinforced augmentation of the dorsal acetabular rim (DAR) using a string-of-pearls (SOP™) locking plate and polymethylmethacrylate (PMMA) bone cement, and to report clinical outcome in 7 dogs.

Study Design

Case series.

Animals

Dogs (n=7).

Methods

Medical records (November 2009–April 2010) of 7 dogs with large DAR deficits, that had total hip replacement (THR) with reinforced augmentation of the DAR using a SOP™ plate and PMMA were evaluated retrospectively. Reinforced augmentation of the DAR involved anchorage of a precontoured 2.0 or 2.7 mm SOP™ plate dorsal to the acetabulum followed by application of PMMA cement to cover the reamed acetabulum and plate. Cemented acetabular components were used. Implant associated complications were recorded and ≥6-month follow-up obtained.

Results

In all dogs, lameness improved at medium-term reassessment (median, 8 months; range, 6–11 months). Complications included transient sciatic neurapraxia in 2 dogs, which resolved by 3 months.

Conclusions

Reinforced augmentation of the DAR using a SOP™ plate and PMMA cement may facilitate placement of acetabular THR component implantation in dogs with severe DAR insufficiency.

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