How do transtibial residual limbs adjust to intermittent incremental socket volume changes?
Prosthetic interface mechanics
biomechanics
biomechanics of prosthetic/orthotic devices
rehabilitation
rehabilitation of prostheses users
Journal
Prosthetics and orthotics international
ISSN: 1746-1553
Titre abrégé: Prosthet Orthot Int
Pays: France
ID NLM: 7707720
Informations de publication
Date de publication:
Oct 2019
Oct 2019
Historique:
pubmed:
25
7
2019
medline:
25
2
2020
entrez:
25
7
2019
Statut:
ppublish
Résumé
Strategies to maintain prosthesis users' daily limb volume are needed. Test how intermittent incremental socket volume adjustments affect limb fluid volume and limb-socket distance. Repeated measures. 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. An incremental socket enlargement significantly increased limb fluid volume ( 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. 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.
Sections du résumé
BACKGROUND
BACKGROUND
Strategies to maintain prosthesis users' daily limb volume are needed.
OBJECTIVES
OBJECTIVE
Test how intermittent incremental socket volume adjustments affect limb fluid volume and limb-socket distance.
STUDY DESIGN
METHODS
Repeated measures.
METHODS
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
RESULTS
An incremental socket enlargement significantly increased limb fluid volume (
CONCLUSION
CONCLUSIONS
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
CONCLUSIONS
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.
Identifiants
pubmed: 31339448
doi: 10.1177/0309364619864771
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM