Inducing Controlled Application of External Socket Reaction Moments to Quantify Unilateral Transtibial Prosthetic Alignment
— University of Strathclyde Skip to main navigation Skip to search Skip to main content University of Strathclyde Home Help & FAQ Home Profiles Research Units Research output Projects Datasets Equipment Student theses Impacts Prizes Activities Search by expertise, name or affiliation Inducing Controlled Application of External Socket Reaction Moments to Quantify Unilateral Transtibial Prosthetic Alignment Niels Jonkergouw Research output: Thesis › Master's Thesis Overview Fingerprint Abstract Background: Important limitations of current prosthetic alignment approaches are the subjectivity by which it is determined and the lack of standardized quantifiable baseline values. The purpose of the current thesis is to describe a new method of alignment, which attempts to address these limitations. The new method steps away from the subjective dynamic alignment methods by finding a quantitative alignment method in a dynamic state. The study's research goal was to influence the moment at the base of the socket to a predetermined optimal ESRM of 0Nm/kg, defined as the final alignment moment. Methods: Ten participants with a uni-lateral transtibial amputation were recruited. An instrumented prosthesis and a gait lab measured the external socket reaction moments during prosthetic stance phase. Two different conditions were applied; dynamic alignment, which is clinically applicable and computer-assisted, in which the prosthetist aligns the prosthesis to a predetermined kinetic optimum. Additionally, in both conditions the socket comfort score of the participants was inquired and a gait analysis was performed. Results: For all participants the predetermined goal was achieved, with a significant (p<0.001) reduction of the external socket reaction moment in the final alignment condition. This resulted in a significant (p<0.001) decrease of the knee coronal moments as well. The socket comfort score did not significantly change, however two participants experienced a substantial decrease. Conclusion: Optimisation of prosthetic alignment by a single kinetic parameter, the ESRM, may not be the ideal method. The ESRM alignment method does not address the position on which the moment is derived in relation to the knee joint centre. Therefore, future processes may involve assessment of kinetics of knee and hip joints in addition to the ESRM. Original language English Awarding Institution University Of Strathclyde Supervisors/Advisors Buis, Arjan, Supervisor Publication status Published - 2015 Externally published Yes Keywords prosthetics alignment below the knee optimal Grail perbutations kinetics kinematics Cite this APA Author BIBTEX Harvard Standard RIS Vancouver Jonkergouw, N. (2015). Inducing Controlled Application of External Socket Reaction Moments to Quantify Unilateral Transtibial Prosthetic Alignment. Jonkergouw, Niels. / Inducing Controlled Application of External Socket Reaction Moments to Quantify Unilateral Transtibial Prosthetic Alignment. 2015. @phdthesis{02ff1a51f6024490a3e26525554fa4c2, title = "Inducing Controlled Application of External Socket Reaction Moments to Quantify Unilateral Transtibial Prosthetic Alignment", abstract = "Background: Important limitations of current prosthetic alignment approaches are the subjectivity by which it is determined and the lack of standardized quantifiable baseline values. The purpose of the current thesis is to describe a new method of alignment, which attempts to address these limitations. The new method steps away from the subjective dynamic alignment methods by finding a quantitative alignment method in a dynamic state. The study's research goal was to influence the moment at the base of the socket to a predetermined optimal ESRM of 0Nm/kg, defined as the final alignment moment.Methods: Ten participants with a uni-lateral transtibial amputation were recruited. An instrumented prosthesis and a gait lab measured the external socket reaction moments during prosthetic stance phase. Two different conditions were applied; dynamic alignment, which is clinically applicable and computer-assisted, in which the prosthetist aligns the prosthesis to a predetermined kinetic optimum. Additionally, in both conditions the socket comfort score of the participants was inquired and a gait analysis was performed. Results: For all participants the predetermined goal was achieved, with a significant (p<0.001) reduction of the external socket reaction moment in the final alignment condition. This resulted in a significant (p<0.001) decrease of the knee coronal moments as well. The socket comfort score did not significantly change, however two participants experienced a substantial decrease.Conclusion: Optimisation of prosthetic alignment by a single kinetic parameter, the ESRM, may not be the ideal method. The ESRM alignment method does not address the position on which the moment is derived in relation to the knee joint centre. Therefore, future processes may involve assessment of kinetics of knee and hip joints in addition to the ESRM.", keywords = "prosthetics, alignment, below the knee, optimal, Grail, perbutations, kinetics, kinematics", author = "Niels Jonkergouw", year = "2015", language = "English", school = "University Of Strathclyde", } Jonkergouw, N 2015, 'Inducing Controlled Application of External Socket Reaction Moments to Quantify Unilateral Transtibial Prosthetic Alignment', University Of Strathclyde. Inducing Controlled Application of External Socket Reaction Moments to Quantify Unilateral Transtibial Prosthetic Alignment. / Jonkergouw, Niels. 2015. Research output: Thesis › Master's Thesis TY - THES T1 - Inducing Controlled Application of External Socket Reaction Moments to Quantify Unilateral Transtibial Prosthetic Alignment AU - Jonkergouw, Niels PY - 2015 Y1 - 2015 N2 - Background: Important limitations of current prosthetic alignment approaches are the subjectivity by which it is determined and the lack of standardized quantifiable baseline values. The purpose of the current thesis is to describe a new method of alignment, which attempts to address these limitations. The new method steps away from the subjective dynamic alignment methods by finding a quantitative alignment method in a dynamic state. The study's research goal was to influence the moment at the base of the socket to a predetermined optimal ESRM of 0Nm/kg, defined as the final alignment moment.Methods: Ten participants with a uni-lateral transtibial amputation were recruited. An instrumented prosthesis and a gait lab measured the external socket reaction moments during prosthetic stance phase. Two different conditions were applied; dynamic alignment, which is clinically applicable and computer-assisted, in which the prosthetist aligns the prosthesis to a predetermined kinetic optimum. Additionally, in both conditions the socket comfort score of the participants was inquired and a gait analysis was performed. Results: For all participants the predetermined goal was achieved, with a significant (p<0.001) reduction of the external socket reaction moment in the final alignment condition. This resulted in a significant (p<0.001) decrease of the knee coronal moments as well. The socket comfort score did not significantly change, however two participants experienced a substantial decrease.Conclusion: Optimisation of prosthetic alignment by a single kinetic parameter, the ESRM, may not be the ideal method. The ESRM alignment method does not address the position on which the moment is derived in relation to the knee joint centre. Therefore, future processes may involve assessment of kinetics of knee and hip joints in addition to the ESRM. AB - Background: Important limitations of current prosthetic alignment approaches are the subjectivity by which it is determined and the lack of standardized quantifiable baseline values. The purpose of the current thesis is to describe a new method of alignment, which attempts to address these limitations. The new method steps away from the subjective dynamic alignment methods by finding a quantitative alignment method in a dynamic state. The study's research goal was to influence the moment at the base of the socket to a predetermined optimal ESRM of 0Nm/kg, defined as the final alignment moment.Methods: Ten participants with a uni-lateral transtibial amputation were recruited. An instrumented prosthesis and a gait lab measured the external socket reaction moments during prosthetic stance phase. Two different conditions were applied; dynamic alignment, which is clinically applicable and computer-assisted, in which the prosthetist aligns the prosthesis to a predetermined kinetic optimum. Additionally, in both conditions the socket comfort score of the participants was inquired and a gait analysis was performed. Results: For all participants the predetermined goal was achieved, with a significant (p<0.001) reduction of the external socket reaction moment in the final alignment condition. This resulted in a significant (p<0.001) decrease of the knee coronal moments as well. The socket comfort score did not significantly change, however two participants experienced a substantial decrease.Conclusion: Optimisation of prosthetic alignment by a single kinetic parameter, the ESRM, may not be the ideal method. The ESRM alignment method does not address the position on which the moment is derived in relation to the knee joint centre. Therefore, future processes may involve assessment of kinetics of knee and hip joints in addition to the ESRM. KW - prosthetics KW - alignment KW - below the knee KW - optimal KW - Grail KW - perbutations KW - kinetics KW - kinematics M3 - Master's Thesis ER - Jonkergouw N. Inducing Controlled Application of External Socket Reaction Moments to Quantify Unilateral Transtibial Prosthetic Alignment. 2015. Powered by Pure, Scopus & Elsevier Fingerprint Engine™ © 2022 Elsevier B.V. We use cookies to help provide and enhance our service and tailor content. 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