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Ankle Joint

Ankle Joint

The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...

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Total Ankle Total Talus Replacement Using a 3D Printed Talus Component: A Case Report.

Craig C Akoh¹, Jie Chen¹, Samuel B Adams²

¹Foot and Ankle Fellow, Duke University Medical Center, Durham, NC.

The Journal of Foot and Ankle Surgery : Official Publication of the American College of Foot and Ankle Surgeons

|September 22, 2020

Summary

3D custom total ankle-total talus replacement (TATTR) offers a novel solution for talus avascular necrosis with adjacent joint involvement. This 3D-printed procedure aims to relieve pain and improve function while preserving motion.

Keywords:

3D printing additive manufacturing ankle replacement avascular necrosis osteonecrosis total talus

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Area of Science:

Orthopedic Surgery
Biomedical Engineering
3D Printing Technology

Background:

Avascular necrosis of the talus often presents with degenerative changes in adjacent ankle joints.
Traditional treatments may be insufficient for extensive talar and tibial plafond damage.

Observation:

The combined 3D custom total ankle-total talus replacement (TATTR) addresses unreconstructable talus and tibial plafond involvement.
3D printing enables precise replication of native talar anatomy for TATTR.

Findings:

TATTR integrates a custom talar component with a total ankle replacement system.
The procedure aims to restore tibiotalar joint motion and patient function.
Minimizing limb shortening is a key objective of TATTR.

Implications:

TATTR represents a significant advancement in treating complex talar avascular necrosis.
This approach may improve outcomes for patients with severe ankle degeneration.
3D printing facilitates personalized orthopedic solutions for challenging cases.