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3D printed porous PCL and nylon 12 scaffold for proximal phalanx bone replacement
Gudepu, Siva Sai Reddy
Gudepu, Siva Sai Reddy
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2026-05
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Thesis
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Electronic dissertations
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Hand injuries are quite common especially in some situations that involve repetitive manual work, and the proximal phalanx is particularly vulnerable to damage. These types of injuries can lead to reduced function, discomfort, and longer recovery times. In this study a prosthetic model of the proximal phalanx is developed using advanced 3D printing technology. This approach is chosen for its precision and ability to create structures with controlled adjustable porosity which better replicates natural bone structure and supports improved tissue integration. In this study, polycaprolactone (PCL) and Nylon 12 are printed separately while allowing each material to be evaluated on its own. PCL is used because it can slowly degrade in the body and supports bone cell growth making it suitable for regeneration. Nylon 12 has its own advantages in terms of the strength, durability, and wear resistance. A hydroxyapatite coating is applied to both materials to improve their ability to bond with natural bone tissue. In this study each material is printed with different porosity or infill rate following by coating with HA and evaluated for surface characteristics, mechanical strength, and biological response. This approach helps to understand how well each material performs on its own in restoring function and improving comfort for individuals with proximal phalanx injuries.
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Thesis (M.S.)-- Wichita State University, College of Engineering, Dept. of Mechanical Engineering
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Wichita State University
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