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How do transtibial residual limbs adjust to intermittent incremental socket volume changes?
Larsen, Brian G; McLean, Jake B; Allyn, Katheryn J; Brzostowski, Jacob T; Garbini, Joseph L; Sanders, Joan E.
Afiliación
  • Larsen BG; Department of Bioengineering, University of Washington, Seattle, WA, USA.
  • McLean JB; Department of Bioengineering, University of Washington, Seattle, WA, USA.
  • Allyn KJ; Department of Bioengineering, University of Washington, Seattle, WA, USA.
  • Brzostowski JT; Department of Bioengineering, University of Washington, Seattle, WA, USA.
  • Garbini JL; Department of Mechanical Engineering, University of Washington, Seattle, WA, USA.
  • Sanders JE; Department of Bioengineering, University of Washington, Seattle, WA, USA.
Prosthet Orthot Int ; 43(5): 528-539, 2019 Oct.
Article en En | MEDLINE | ID: mdl-31339448
BACKGROUND: Strategies to maintain prosthesis users' daily limb volume are needed. OBJECTIVES: Test how intermittent incremental socket volume adjustments affect limb fluid volume and limb-socket distance. STUDY DESIGN: Repeated measures. METHODS: People with transtibial limb loss walked on an outdoor trail wearing a motor-driven adjustable socket that they adjusted a small amount, approximately 0.3% socket volume, every 2 min using a mobile phone app. Limb fluid volume and sensed distance between the socket and a target in their elastomeric liner were monitored. A gradual socket enlargement phase was followed by a gradual socket reduction phase. RESULTS: An incremental socket enlargement significantly increased limb fluid volume (p < 0.001) but not sensed distance (p = 0.063). An incremental socket reduction significantly decreased both limb fluid volume (p < 0.001) and sensed distance (p < 0.001). CONCLUSION: Participants' residual limb fluid volume increases during ambulation compensated for incremental socket volume increases. For incremental socket volume decreases, residual limb fluid volume decreases did not compensate and the socket fit became tighter. CLINICAL RELEVANCE: Results support the hypothesis that for people without co-morbidities, intermittent incremental socket volume enlargements are an effective accommodation strategy to increase limb fluid volume while maintaining socket fit. Intermittent incremental socket volume reductions decreased limb fluid volume but also made the socket fit tighter.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Miembros Artificiales / Tibia / Adaptación Fisiológica / Ajuste de Prótesis / Líquido Extracelular / Muñones de Amputación Límite: Adult / Aged / Female / Humans / Male / Middle aged Idioma: En Revista: Prosthet Orthot Int Año: 2019 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Francia
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Miembros Artificiales / Tibia / Adaptación Fisiológica / Ajuste de Prótesis / Líquido Extracelular / Muñones de Amputación Límite: Adult / Aged / Female / Humans / Male / Middle aged Idioma: En Revista: Prosthet Orthot Int Año: 2019 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Francia