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Long-term activity in and among persons with transfemoral amputation

Long-term activity in and among persons with transfemoral amputation. Elizabeth G. Halsne, CPO, BSPO; Matthew G. Waddingham, CO, BSPO; Brian J. Hafner, PhD. Aim

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Long-term activity in and among persons with transfemoral amputation

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  1. Long-term activity in and among persons with transfemoral amputation Elizabeth G. Halsne, CPO, BSPO; Matthew G. Waddingham, CO, BSPO; Brian J. Hafner, PhD

  2. Aim • Retrospectively analyze 12 months of step activity data to quantify activity levels, variations, and patterns in 17 adults with unilateral transfemoral amputation (TFA). • Relevance • Although physical limitations associated with TFA have been studied in laboratory, little is known about habitual activity within free-living environments.

  3. Method • To characterize mobility: • Examined yearly, seasonal, and monthly average daily step counts and coefficients of variation (CoVs). • To explore relationships between clinical classification and performance: • Analyzed Medicare Functional Classification Level (MFCL).

  4. Results • Subjects averaged 1,540 prosthetic steps/day. • Activity generally increased with MFCL. • Relative variation (CoV): • Across subjects = 0.65. • Lower for those with higher activity levels. • No significant differences by group. • Marked seasonal and monthly patterns in activities.

  5. Conclusion • Warmer seasons and months generally promoted higher activity, but peak temperatures and humidity depressed activity. • Large variations within and between subjects may challenge the interpretation of step activity gathered over short time periods.

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