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

Custom total talus replacement as a salvage option for failed total ankle arthroplasty: A prospective report of two cases

“…6 They reported major complications involving osseous breakdown at the talar neck region. [1][2][3][4][5][6][7][8][9] Harnroongroj and Harnroongroj further investigated the results 10-36 years post operatively. They stated that 28/33 were still in place and 5 failed within the five year period.…”

“…2,3 Other non-traumatic etiologies include alcoholism, prolonged use of steroids, use of vasopressors, hyperlipidemia, systemic lupus erythematosus and thrombophilia. 2,3,4 A complication of talar AVN is often osseous collapse. Talar collapse has also been described following total ankle arthroplasty (TAA).…”

“…They described favorable results in treating post traumatic and idiopathic talar AVN. [1][2][3][4] Custom total talus replacements have also evolved into unconstrained vs constrained. Constrained TTR are either fixated to the navicular, calcaneus, or both while unconstrained don't incorporate fixation to adjacent bones thus maintaining its articulation and natural motion.…”

Evaluation of the Level of Fit of Radial Fracture Fixation Plates Using Virtual and 3D-printed Models

“…Therefore, since the bi-lateral symmetry in the geometry of the radius has been demonstrated in the past [7,19,20], the contra-lateral bone can serve as a reliable replacement for the pre-injury geometry of the fractured bone. This method has been used in recent years for design of personalized total bone replacement such as replacement of the talus [23] and for design of personalized fracture xation plates. Accurate production of arti cial bones that faithfully reproduce the 3D morphology of the physical bone can also be used as a viable less costly alternative to personalized plate production by 3D printing the intact mirror-imaged contralateral bone and then bending and tting a standard plate to serve as a reliable pre-t plate to be used for fracture reduction and fracture xation.…”

Talonavicular Joint-Sparing 3D Printed Navicular Replacement for Osteonecrosis of the Navicular

“…Moreover, total talus replacement has also been successfully combined with total ankle replacement to further preserve motion when the tibia side of the joint is pathologic. 1 The talonavicular joint is an essential joint of the foot and should be spared fusion whenever possible. In fact, arthrodesis of the talonavicular joint has been shown to reduce subtalar joint motion by 91%.…”