Vet Comp Orthop Traumatol 2022; 35(05): A15-A32
DOI: 10.1055/s-0042-1758288
Podium Abstracts

Total Hip Arthroplasty for Femoral Fractures Other than Capital Physeal Fractures in Thirteen Dogs

S. Jones
1   The Ohio State University, Columbus, Ohio, United States
,
T. Adams
1   The Ohio State University, Columbus, Ohio, United States
,
J. Dyce
2   Friendship Hospital for Animals, Washington, DC, United States
› Author Affiliations
 

Introduction: Proximal femoral fracture repairs are predisposed to complications. Complications following proximal femoral fracture repair commonly result in the performance of an FHO. To date, other than chronic capital physeal fractures, the treatment of femoral head and neck fractures via total hip arthroplasty THA has not been reported. The goal of this retrospective study was to assess the clinical and radiographic outcomes in dogs with proximal femoral fractures, other than capital physeal fractures, treated via THA.

Materials and Methods: Medical records of dogs with femoral head/neck fractures and treated via THA were retrospectively reviewed. A complete radiographic series, including orthogonal views of the pelvis and femur pre-operatively, post-operatively and 2 to 3 months post-operatively, were reviewed. A Liverpool Osteoarthritis in Dogs (LOAD) questionnaire was completed by owners to help assess the long-term outcomes.

Results: Thirteen dogs met inclusion criteria. The median age and weight of the dogs was 32 months and 26.85 kg, respectively. Seven dogs had femoral neck fractures and six dogs had femoral head fractures. Median stem varus angulation was 5.5 degrees (0–9.5 degrees) and 0 degrees (0–1.5 degrees) in the neck and head fracture groups, respectively. Average (±SD) subsidence in the femoral neck and head fracture group was 5.2 mm (±6.0 mm) and 0.14 mm (±0.81 mm), respectively. The average (±SD) LOAD score was 5.8 (±5.1).

Discussion/Conclusion: An increased incidence of stem misalignment and subsidence was detected in these cases, particularly in the neck fracture group. All of the neck fractures were chronic in nature with significant bone sclerosis and remodelling making coaxial femoral preparation and stem insertion challenging. Despite these technical challenges, long-term owner-assessed outcomes were good-to-very good.

Acknowledgements: There was no proprietary interest or funding provided for this project.



Publication History

Article published online:
26 October 2022

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