Patient-Specific 3D-Printed Reference Rod for "Smiley Face Rod" Repair of Lumbar Spondylolysis in a Patient with High Body Mass Index

Key Points

• This research aims to evaluate the effectiveness of a 3D-printed rod in repairing lumbar spondylolysis in patients with high BMI.
• Development of a patient-specific 3D-printed reference rod for surgical use.
• Comparison of traditional rod contouring techniques with the 3D-printed approach.
• Evaluation based on surgical accuracy and ease of use.
• The patient-specific 3D-printed rod provided greater anatomical precision.
• Surgical time was reduced compared to conventional methods.
• Enhanced outcomes in visualizing and accessing deep anatomical structures.