I. Part 1: General Topics a. Historical perspectives on 3D printing b. Medical/Surgical applications: current state of technology c. Applications in foot and ankle surgery: pre-operative planning, custom instrumentation, and patient-specific implants d. Material science: when to consider each printable material (cobalt-chrome, titanium alloy, pure titanium, tantalum, Alumina ceramic, etc) e. Regulatory status and challenges f. Future outlook II.

Part 2: Surgical Techniques - Each chapter/technique will follow a similar format and is to include indications, contraindications, descriptive technique guide, case examples and complications - Each topic may be further subdivided for added detail and specificity - Each procedure may have more than one technique when applicable a. Osseous deficits of the tibia b. Osseous deficits of the fibula c. Total talus replacement d. Partial talus replacement/resurfacing e. Total ankle replacement with custom total talus replacement f. Total ankle replacement with custom tibial component g. Tibial-talar-calcaneal fusion with custom talar spacer h.

Partial/subtotal calcaneus replacement i. Charcot reconstruction (midfoot, transverse tarsal, subtalar, ankle) j. Medial column fusion with custom navicular spacer k. Other tarsal bone replacement (cuboid/cuneiforms) l. Deformity correction of hindfoot with custom wedges m. Midfoot fusion with custom wedges n. Lesser metatarsal replacement o. 1st metatarsal phalangeal joint fusion revision with osseous deficit.