Adjustable sockets may improve residual limb fluid volume retention in transtibial prosthesis users.
Biomechanics of prosthetic/orthotic devices
adjustable socket and fluid volume
amputee
biomechanics
orthotic components
prosthetic design
prosthetic interface mechanics
prosthetics
testing of prosthetic
Journal
Prosthetics and orthotics international
ISSN: 1746-1553
Titre abrégé: Prosthet Orthot Int
Pays: France
ID NLM: 7707720
Informations de publication
Date de publication:
Jun 2019
Jun 2019
Historique:
pubmed:
11
1
2019
medline:
20
12
2019
entrez:
11
1
2019
Statut:
ppublish
Résumé
Loss of residual limb volume degrades socket fit and may require accommodation. To examine if either of two accommodation strategies executed during resting, socket release with full socket size return and socket release with partial socket size return, enhanced limb fluid volume retention during subsequent activity. Two repeated-measures experiments were conducted to assess the effects of socket release on limb fluid volume retention. Limb fluid volume was monitored while participants wore a socket with a single adjustable panel. Participants performed eight activity cycles that each included 10 min of sitting and 2 min of walking. The socket's posterior panel and pin lock were released during the fifth cycle while participants were sitting. In one experiment (Full Return), the socket was returned to its pre-release size; in a second experiment (Partial Return), it was returned to 102% of its pre-release size. Short-term and long-term limb fluid volume retention were calculated and compared to a projected, No Intervention condition. Partial Return and Full Return short-term retentions and Partial Return long-term retention were greater than those projected under the control condition ( p < 0.05). Socket release during resting after activity, particularly when the socket is returned to a slightly larger size, may be an effective accommodation strategy to reduce fluid volume loss in transtibial prosthesis users. This study suggests that existing prosthetic technologies' adjustable sockets and locking pin tethers can be used in novel ways to help maintain residual limb fluid volume in active prosthesis users.
Sections du résumé
BACKGROUND
BACKGROUND
Loss of residual limb volume degrades socket fit and may require accommodation.
OBJECTIVES
OBJECTIVE
To examine if either of two accommodation strategies executed during resting, socket release with full socket size return and socket release with partial socket size return, enhanced limb fluid volume retention during subsequent activity.
STUDY DESIGN
METHODS
Two repeated-measures experiments were conducted to assess the effects of socket release on limb fluid volume retention.
METHODS
METHODS
Limb fluid volume was monitored while participants wore a socket with a single adjustable panel. Participants performed eight activity cycles that each included 10 min of sitting and 2 min of walking. The socket's posterior panel and pin lock were released during the fifth cycle while participants were sitting. In one experiment (Full Return), the socket was returned to its pre-release size; in a second experiment (Partial Return), it was returned to 102% of its pre-release size. Short-term and long-term limb fluid volume retention were calculated and compared to a projected, No Intervention condition.
RESULTS
RESULTS
Partial Return and Full Return short-term retentions and Partial Return long-term retention were greater than those projected under the control condition ( p < 0.05).
CONCLUSION
CONCLUSIONS
Socket release during resting after activity, particularly when the socket is returned to a slightly larger size, may be an effective accommodation strategy to reduce fluid volume loss in transtibial prosthesis users.
CLINICAL RELEVANCE
CONCLUSIONS
This study suggests that existing prosthetic technologies' adjustable sockets and locking pin tethers can be used in novel ways to help maintain residual limb fluid volume in active prosthesis users.
Identifiants
pubmed: 30628522
doi: 10.1177/0309364618820140
pmc: PMC7447526
mid: NIHMS1605881
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
250-256Subventions
Organisme : NICHD NIH HHS
ID : R01 HD060585
Pays : United States
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