Surgery Resident VCA Animal Specialty Group Los Angeles, California
Clinical Outcomes of Canine Total Hip Replacements Utilizing a BFX® Lateral Bolt Femoral Stem: 205 Consecutive Joint Replacements (2013–2019). Kwok J, Wendelburg K. VCA Animal Specialty Group, Los Angeles, CA.
Introduction: The purpose of this study was to evaluate postoperative outcomes and complications in total hip replacements (THR) utilizing the BFX® Lateral Bolt Stem. We hypothesized that patients undergoing THR with the BFX® Lateral Bolt Stem would return to normal function with minimal subsidence. Materials and
Methods: 205 consecutive THRs that utilized a BFX® Lateral Bolt Stem were studied. Preoperative, immediate postoperative, and one-, two-, three-, four-, and 12-month postoperative radiographs were performed. Subsidence was assessed by comparing the stem levels using caudocranial radiographs immediately post-op stem level and one month postoperative.
Results: A 3.4% postoperative femoral fracture rate (n = 7) was observed at a median of three days postoperatively (range 2–12 days). A 3.4% (n = 7) luxation rate was observed at a median of 14 days postoperatively (range 2–120 days). A total of five dogs (2.4%) had their prostheses explanted at a median of three months postoperatively (range 2–30 months). Eight dogs (3.9%) underwent revision due to complications with the femoral stem. Average subsidence at one month postoperative was 1.25 ± 0.16 mm. 97.4% of cases were successful in the long-term period. Discussion/
Conclusion: 97.4% of dogs with a BFX® Lateral Bolt Stem returned to normal activity long term with an average of 1.25 mm of subsidence in the first month. Use of the BFX® Lateral Bolt Stem has a very low long-term complication rate.