Proximal Femoral Deformity Correction and Total Hip Arthroplasty in a Dog Using Three-Dimensionally Printed Custom Guides

Case Report: The objective is to report the successful correction of a proximal femoral deformity (PFD) and total hip arthroplasty (THA) in a dog with the use of custom three-dimensionally (3D) printed custom surgical guides (PSGs). A 1-year-old, male neutered, Golden Doodle with a proximal valgus and recurvatum proximal femoral deformity (PFD) precluded femoral stem placement for THA, which was indicated for severe hip dysplasia. Using CT-derived bone and implant models, custom osteotomy guides were designed. A 13-hole 3.5 mm locking compression plate was contoured and applied to 3D printed models of the corrected femur prior, and screw trajectory was incorporated into the 3D printed guides. The PFD correction was achieved with the aid of the custom guides and pre-contoured plate to within 1.7 degrees of varus, and 1.3 degrees of recurvatum, compared with the virtual surgical plan. The plate was secured using three cortical screws, five locking screws, and two 18-gauge double cerclage wires. Lateral Bolt BFX stem placement was achieved with 7 degrees of varus and 9 degrees of caudal angulation. No lameness and good range of motion of the hip were observed on clinical examination 3 months after surgery. Radiographs at 3 and 6 months documented static implant positioning, and healed osteotomy site. Virtual surgical planning and PSGs accurately facilitated concurrent THA and PFD correction.

Proprietary/Conflict of Interest: The authors do not have any potential conflict of interest to declare.

Publication History

Article published online:
26 October 2022