Custom 3D-Printed Biological Total Knee Arthroplasty (TKA) in a Dog: Clinical Case and 2.5-Month Outcome
In this case, I document what was the first reported biological canine total knee arthroplasty (TKA) using custom 3D-printed implants and disposable patient-matched instrumentation in China. The patient, a 25 kg Husky, suffered from end-stage osteoarthritis and severe meniscal damage triggered by chronic cranial cruciate ligament rupture. Facing a complete lack of off-the-shelf knee prostheses suited to this dog, my surgical team at Guangzhou Boss Animal Hospital collaborated with Associate Professor Zhang Jun and the materials engineering team at the Guangdong Academy of Sciences. Together, we designed and 3D-printed a cementless CoCrMo/porous titanium/Vitamin E-stabilized polyethylene implant system. Following 1:1 benchtop simulation, we successfully placed the prosthesis. By day one post-op, the dog was weight-bearing without pain; at 2.5 months, he was galloping freely off-leash across the grass.