Revision of Hip Luxation in a Canine Total Hip Replacement Caused by a Greater Trochanteric Fracture Secondary to an Inflammatory Granuloma

Abstract

A hip luxation 3 years following a cementless total hip replacement was diagnosed in a 4.7-year-old neutered male Lagotto Romagnolo that presented with a non-weight-bearing left pelvic limb lameness. Orthogonal radiographs revealed a left hip luxation and an osteolytic fracture of the greater trochanter. A mass consistent with an inflammatory granuloma was identified on preoperative computed tomography scan. Surgical revision consisted of granuloma excision, replacement of the loose acetabular cup, and repair of the femoral fracture with a locking plate. Fracture biology was augmented with the use of recombinant human bone morphogenetic protein 2 (rhBMP2) impregnated collagen sponge applied around the acetabulum and femoral fracture site. Osteointegration of the prosthetics and fracture healing were documented within 3 months of revision. Long-term follow-up at 3 years postrevision showed normal limb usage and no further evidence of total hip replacement complication.

Keywords

total hip replacement - revision surgery - polyethylene wear - cementless - trochanter fracture

Authors' Contribution

Both the authors contributed to acquisition of data, data analysis and interpretation, and drafted, revised, and approved the submitted manuscript.

Publikationsverlauf

Eingereicht: 11. März 2024

Angenommen: 04. Oktober 2024

Artikel online veröffentlicht:
04. November 2024

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