String-Of-Pearls Locking Plate and Cerclage Wire Stabilization of Periprosthetic Femoral Fractures after Total Hip Replacement in Six Dogs


  • 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


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  • Christos Nikolaou DVM,

  • Russell Yeadon MA VetMB CertSAS,

  • Michael Hamilton BVM&S CertSAS Diplomate ECVS



To report use of, and outcome after, string-of-pearls (SOP™) plate and multiple cerclage wire fixation for treatment of periprosthetic femoral fractures (PFF) associated with total hip replacement (THR) in dogs.

Study Design

Case series.


Dogs (n=6) with PFF after THR.


Clinical records (2005–2010) and radiographic evaluations of dogs that had PFF associated with THR, treated with a SOP™ plate and cerclage wires were retrospectively reviewed. Clinical and radiographic postoperative assessments were performed 4, 12, and 24 weeks postoperatively. Telephone follow-up was performed >12 months postoperatively.


Three fractures occurred intraoperatively and 3 occurred postoperatively. One SOP™ failed at 2 weeks necessitating revision using 2 parallel SOP™ implants. One dog was euthanatized because of quadriceps muscle tie-down at 6 weeks. Other dogs were free of lameness with full range of motion of the stifle and hip joints at final clinical examination, and positive outcomes were maintained at >12 month telephone questionnaire. There was no evidence of implant failure and positive evidence of fracture healing at final radiographic follow-up.


Stabilization resulted in bone healing in 5 dogs; failure in 1 dog may be attributable to technical error. Optimal technical guidelines for use of the SOP™ in this circumstance are unknown, particularly where fracture configuration varies.