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TRANSFEMORAL SOCKET FABRICATION METHOD USING DIRECT CASTING: OUTCOMES REGARDING PATIENT SATISFACTION WITH DEVICE AND SERVICES

W. Russ Marable, Christian Smith, Benedikt Þorri Sigurjónsson, Ingi Freyr Atlason, G. Anton Johannesson
CANADIAN PROSTHETICS & ORTHOTICS JOURNAL , Volume 3; doi:10.33137/cpoj.v3i2.34672

Abstract: BACKGROUND: Direct Socket for transfemoral (DS-TF) prosthetic user is a novel method of fabricating a laminated interface on to the residual limb but requires different training, production method and service model than what most prosthetists are familiar with. This method and model may improve patient satisfaction by enabling interface fabrication and delivery in one visit. OBJECTIVES: Document patient satisfaction regarding DS-TF interface versus the prosthetic users’ previous socket in terms of interface function and the clinic service model. METHODOLOGY: In this longitudinal study (from July 2018 to April 2020), the DS-TF was implemented in six prosthetic clinics across the United States. Certified prosthetists (CP) and assistants were trained using a standard protocol. 47 prosthetic users participated, both those in need of a new socket and those without need. Two modules from the Orthotics and Prosthetics Users’ Survey (OPUS), involving questions related to satisfaction with the Device and Services, was used to evaluate each DS-TF user outcome vs. baseline. The only part of the prosthesis that was replaced was the interface, except in 2 cases. FINDINGS: Each DS-TF interface was fabricated, fit and delivered in a single clinic visit. At 6-months follow-up, 38 users reported an average of 29.8% increase in satisfaction with their new interface compared with original, and a 14.8% increase in satisfaction with the services they received from the clinic in providing of the new prosthesis vs. their original prosthesis. The main outcome increases were between baseline (initial fitting) and 6-week follow-up and remained consistent after 6 months. This improvement was consistent irrespective if the user needed a new socket for clinical reasons or not. CONCLUSION: This study shows that after a standardized training and implementation, the DS-TF fabrication process including a new interface improves the user’s satisfaction with their prosthetic device and services. Layman's Abstract The connection between an amputee’s remaining limb and their prosthesis is called the interface and is the most critical part in a prosthetic system for the user satisfaction, comfort and mobility. Interfaces commonly consist of two parts; a flexible “liner” rolled onto the limb, which then goes into a hard socket custom-made by the prosthetist. The assembled interface then provides a secure connection between the users remaining limb and the prosthesis. Historically the prosthetist’s fabrication and fitting procedure required many hours of time and multiple visits to the prosthetic clinic before the interface was delivered to the user. Direct Socket for above knee prosthetic users is a new method of fabricating laminated sockets directly on the residual limb that enables fabrication and delivery in a single visit. However, Direct Socket require different training and methods than what most prosthetists are familiar with. This new procedure was implemented in six different prosthetic clinics across the United States. Seven CP’s were trained, each in their clinic and the method was tested on 38 users for a period of 6 months. The users filled in questionnaires about their experience and satisfaction using their existing socket, as well as their satisfaction of using their new socket. Overall, the Direct Socket prosthetic users reported after the 6-months follow-up significantly greater (29.8%) satisfaction with their new socket compared to their previous socket. They also reported 14.8% increase in satisfaction with the services they obtained from the clinic when receiving the new socket, compared to their satisfaction with receiving their original socket. Article PDF Link: https://jps.library.utoronto.ca/index.php/cpoj/article/view/34672/26933 How To Cite: Marable W.R, Smith C, Sigurjónsson B.Þ, Atlason I.F, Johannesson G.A. Transfemoral socket fabrication method using direct casting: outcomes regarding patient satisfaction with device and services. Canadian Prosthetics & Orthotics Journal. 2020;Volume 3, Issue 2, No.6. https://doi.org/10.33137/cpoj.v3i2.34672 Corresponding Author: G. Anton Johannesson, PhDTeamOlmed, Kistagången 12, 164 40 Kista, Stockholm, Sweden.E-mail: [email protected]: https://orcid.org/0000-0001-8729-458X
Keywords: satisfaction / Residual Limb / previous socket / prosthetists are familiar / fabricating a laminated / require different training

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