Energy cost of walking in transfemoral amputees: Comparison between Marlo Anatomical Socket and Ischial Containment Socket

Marco Traballesi, Anna Sofia Delussu, Tiziano Averna, Roberto Pellegrini, Francesco Paradisi, Stefano Brunelli

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: To compare energy cost of walking (ECW) and prosthesis-related perceived mobility with the Marlo Anatomical Socket (MAS ®) and the Ischial Containment (IC) Socket. Method: Transfemoral (TF) amputees were enrolled in the study. ECW tests were conducted inside, in a hallway with a regular floor surface. Subjects had to walk back and forth on a 61m linear course at their own self-selected speed. Metabolic and heart rate data were collected during the walking test using a portable gas analyzer. All measurements were made at steady state (SS). The tests were performed first using the IC socket and then after 30 days of MAS ® use; the last test was carried out after 60 days of MAS ® use. The amputees were also administered the Prosthetic Evaluation Questionnaire Mobility Section (PEQ MS) at the first and the last test to assess perceived potential for mobility using the prosthesis. Results: Seven long-term prosthesis users were analyzed. Their mean age was 33.9±9.3 years; all were employed, active, and used IC sockets. At the third walking test, the ECW with the MAS ® was significantly lower than that with the IC socket (p=016). PEQ MS data also improved significantly at the last evaluation (p<018). Conclusion: Results suggest that using the MAS ®, lowering the ECW and improving PEQ MS, could be a valid prosthesis design for active TF amputees compared to their usual IC socket.

Original languageEnglish
Pages (from-to)270-274
Number of pages5
JournalGait and Posture
Volume34
Issue number2
DOIs
Publication statusPublished - Jun 2011

Keywords

  • Efficiency
  • Gait
  • Oxygen consumption

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Rehabilitation
  • Biophysics

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