Development of 3D-Printed Interbody Fusion Devices to Enhance Biomechanical Stability and Reduce Post-Surgical Complications in Canine Lumbosacral Disease

Degenerative lumbosacral stenosis (DLSS) in dogs is a condition characterized by the narrowing of the vertebral canal at the lumbosacral (LS) junction. This narrowing compresses the cauda equina nerve roots, causing clinical signs such as pelvic limb lameness, lumbar pain, and, in severe cases, neurological deficits like paraparesis. DLSS is most prevalent in large-breed dogs due to increased anatomical stress at the LS junction from their size and weight. The use of intervertebral cages for fusion presents a promising approach for distraction, stabilization, and fusion of the LS spine following decompressive surgery. This study aims to design and evaluate 3D-printed, LS interbody fusion devices and compare the biomechanical efficacy of different
techniques in enhancing biomechanical stability, promoting faster fusion, and reducing post-surgical complications like subsidence.