Total Hip Replacement after Failed Femoral Head and Neck Excision in Two Dogs and Two Cats


  • 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, Godalming Surrey GU7 2QQ, UK


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  • Laura Pratola BSc, BVMS,

  • Russell Yeadon MA, VetMB, CertSAS,

  • Christos Nikolaou DVM,

  • Michael Hamilton BVM&S, CertSAS, Diplomate ECVS,

  • Michael Farrell BvetMed, CertVA, CertSAS, Diplomate ECVS



To document outcome in 2 dogs and 2 cats after conversion of femoral head and neck excision (FHNE) to total hip replacement (THR).

Study Design

Case series.


Dogs (n = 2) and 2 cats.


For 1 dog and 2 cats, THR was performed using cemented acetabular and femoral components. Noncemented acetabular and cemented femoral components were used in 1 dog.


All animals presented with severe hip pain and chronic lameness after unsuccessful FHNE. Potential causes of suboptimal outcome after FHNE were incomplete resection of the femoral neck (n = 3) and fibrous adhesions involving the sciatic nerve (n = 2). Post-FHNE remodeling of the proximal femur and acetabulum necessitated unconventional modifications of surgical technique. In all 4 cases, final clinical outcome and radiographic reassessment were satisfactory. Aseptic loosening of the acetabular bone-cement interface necessitating surgical revision was the only complication noted in 1 cat.


Despite severe preoperative pain and chronic functional impairment in all cases, conversion of FHNE to THR produced marked clinical improvement including return to unrestricted exercise within 12 weeks of surgery.