The Phase I study """"""""Manufacturing technology for skin integrated composite prosthetic pylon"""""""" demonstrated feasibility of the novel """"""""Residuum-Integration Prosthetic Technology"""""""" to be used in limb prosthetics. The technology includes a """"""""Skin and Bone Integrated Pylon"""""""" (SBIP), which connects the residuum with an external limb prosthesis. As histopathology analysis has demonstrated, the SBIP will be integrated not only with the residual bone, but also with the residuum's skin in order to minimize the risk of infection and secondary trauma. During the proposed Phase II study the investigators will develop an optimal porous titanium matrix and design of the Skin and Bone Integrated Pylon to maximize the ingrowth of bone and skin cells of the residuum to the SBIP. The mathematical modeling and mechanical testing will be followed by a technological study on the process of manufacturing of the composite porous structure enforced with a permeable internal frame. A pre-clinical study with rodent and non-rodent animals will be conducted to verify the scientific hypotheses and to select the optimal design of the SBIP.

Public Health Relevance

Inadequate prosthetic rehabilitation after limb amputation is a serious problem relevant to public health. The public value of solving this serious problem is much more elevated when a country is at war. Providing US Veterans with infection-safe direct skeletal attachment of prostheses will improve the quality of their lives and eliminate the costs associated with the multiple fabrications and adjustments of the prosthetic sockets.

Agency
National Institute of Health (NIH)
Institute
Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD)
Type
Small Business Innovation Research Grants (SBIR) - Phase II (R44)
Project #
5R44HD057492-03
Application #
7897722
Study Section
Special Emphasis Panel (ZRG1-MOSS-H (12))
Program Officer
Quatrano, Louis A
Project Start
2009-07-15
Project End
2012-07-31
Budget Start
2010-08-01
Budget End
2012-07-31
Support Year
3
Fiscal Year
2010
Total Cost
$401,199
Indirect Cost
Name
Poly-Orth International
Department
Type
DUNS #
803723790
City
Sharon
State
MA
Country
United States
Zip Code
02067
Pitkin, Mark (2018) Distraction Implantation. A New Technique in Total Joint Arthroplasty and Direct Skeletal Attachment. EC Orthop 9:285-292
Jarrell, Joshua R; Farrell, Brad J; Kistenberg, Robert S et al. (2018) Kinetics of individual limbs during level and slope walking with a unilateral transtibial bone-anchored prosthesis in the cat. J Biomech 76:74-83
Shevtsov, Maxim A; Yudintceva, Natalia; Blinova, Miralda et al. (2015) Application of the skin and bone integrated pylon with titanium oxide nanotubes and seeded with dermal fibroblasts. Prosthet Orthot Int 39:477-86
Pitkin, Mark; Muppavarapu, Raghuveer; Cassidy, Charles et al. (2015) Subperiosteal transmission of intra-articular pressure between articulated and stationary joints. Sci Rep 5:8103
Farrell, Brad J; Prilutsky, Boris I; Ritter, Jana M et al. (2014) Effects of pore size, implantation time, and nano-surface properties on rat skin ingrowth into percutaneous porous titanium implants. J Biomed Mater Res A 102:1305-15
Farrell, Brad J; Prilutsky, Boris I; Kistenberg, Robert S et al. (2014) An animal model to evaluate skin-implant-bone integration and gait with a prosthesis directly attached to the residual limb. Clin Biomech (Bristol, Avon) 29:336-49
Shevtsov, Maxim A; Galibin, Oleg V; Yudintceva, Nataliya M et al. (2014) Two-stage implantation of the skin- and bone-integrated pylon seeded with autologous fibroblasts induced into osteoblast differentiation for direct skeletal attachment of limb prostheses. J Biomed Mater Res A 102:3033-48
Pitkin, Mark; Cassidy, Charles; Muppavarapu, Raghuveer et al. (2013) New method of fixation of in-bone implanted prosthesis. J Rehabil Res Dev 50:709-22
Pitkin, M (2013) Design features of implants for direct skeletal attachment of limb prostheses. J Biomed Mater Res A 101:3339-48
Pitkin, M (2013) What can normal gait biomechanics teach a designer of lower limb prostheses? Acta Bioeng Biomech 15:3-10

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