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Relation between capacity and performance in paediatric upper limb prosthesis users.

Helen Lindner1, Ayako Hiyoshi2, Liselotte Hermansson3

  • 11 School of Health Sciences, Örebro University, Sweden.

Prosthetics and Orthotics International
|June 23, 2017
PubMed
Summary
This summary is machine-generated.

The Assessment of Capacity for Myoelectric Control (ACMC) score strongly predicts how easily prosthetic users perform tasks in real life. Higher ACMC scores indicate better ease of performance, aiding clinical decisions for training needs.

Keywords:
Upper limb prostheticsprostheticsrehabilitationrehabilitation of prostheses users

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Area of Science:

  • Rehabilitation Engineering
  • Prosthetics and Orthotics
  • Clinical Biomechanics

Background:

  • The International Classification of Functioning, Disability and Health (ICF) distinguishes between capacity (what an individual can do in a standardized environment) and performance (what an individual actually does in a real-life environment).
  • A gap between capacity and performance may limit participation in daily activities.
  • Understanding this relationship is crucial for effective rehabilitation and prosthetic use.

Purpose of the Study:

  • To investigate the relationship between capacity scores measured in a clinical setting and the proportional ease of performance in a real-life environment among prosthetic users.
  • To determine if clinical capacity assessments can predict real-world functional performance.

Main Methods:

  • Sixty-two prosthetic users (ages 3-17) participated in the study.
  • Capacity was assessed using the Assessment of Capacity for Myoelectric Control (ACMC).
  • Performance was evaluated using the Prosthetic Upper Extremity Functional Index, and analyzed using Spearman correlation and generalized linear models.

Main Results:

  • A strong positive correlation (Spearman coefficient = 0.75) was observed between capacity scores and ease of performance.
  • Capacity was significantly associated with proportional ease of performance in both unadjusted and adjusted models.
  • An increase of 1 unit in the ACMC score was associated with a 45% increase in the ratio of proportional ease of performance.

Conclusions:

  • The Assessment of Capacity for Myoelectric Control (ACMC) score is a significant predictor of ease of performance in real-life settings for prosthetic users.
  • ACMC scores can help clinicians anticipate challenges children may face at home, informing decisions on further training or readiness for advanced tasks.
  • This finding supports the use of ACMC as a valuable clinical tool for guiding prosthetic rehabilitation and intervention strategies.