JLE

Médecine et chirurgie du pied

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3D Printing (Additive Method) in Planning and Correction of Complex Static Disorders of the Foot and Ankle: Methodology and Surgical Applications Volume 36, issue 1, Mars 2020

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Surgical correction of a static foot disorder is based on a clinical evaluation supplemented by conventional x-rays and a reconstruction CT scan. In the operating room, osteotomy and angular corrections lack precision. Preoperative CT scans are currently common practice. Our objectives were to visualize, after printing the model in 3D, the deformations and correct them with precision in the three planes of space. The methodology used is comparable to that of orthodontics with great precision. In our experiment we have obtained a reproduction identical to the clinical deformation with the possibility of performing 3D correction of the deformation at the same scale as the original. The use of ghosts in osteosynthesis allows pre-moulding. This experimental step is an objective, inexpensive technical approach to the gesture to be performed. In a second step it appears possible to create a sterile external frame to guide the osteotomy in all three planes of space with a minimally invasive approach. This methodological approach based on image processing after CT scans has shown its feasibility and is an innovative approach for conceptualizing the surgical management of vicious and complex deformities of the foot.