Performance assessment of the Terry Fox jogging prosthesis for above-knee amputees

Denis Diangelo, David A. Winter, Dhanjoo N. Ghista, W. Roy Newcombe

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The Terry Fox jogging (TFJ) prosthesis was developed at Chedoke-McMaster Hospital to alleviate the asymmetric jogging pattern experienced by above-knee amputees when attempting to jog with conventional walking prostheses. This prosthesis features a spring-loaded, telescoping shank designed to eliminate any vaulting action and control the trunk motion during stance. The spring is intended to attenuate the impact forces and release its stored energy at push-off to provide momentum transfer to the jogger. This prosthesis was comprehensively assessed in the gait laboratory, by evaluating the kinematics, energy and power flow patterns of an above-knee amputee jogger wearing the TFJ prosthesis. Included in the assessment is the ability of the prosthesis to satisfy a set of relevant design criteria that have been established from non-amputee jogging patterns. An increased swing phase time for the prosthetic limb and the need to have the knee hyperextended throughout the stance phase contributed to an asymmetric jogging style. The telescoping action did lower the amputee's centre of mass, thereby reducing the vaulting effect. However, the spring only imparted a lifting action to the jogger and the ground reaction forces were double those of a non-amputee jogger. These findings clearly indicate a need to redesign the TFJ prosthesis and are being incorporated in the design of a new physiological jogging prosthesis.

Original languageEnglish (US)
JournalJournal of Biomechanics
Volume22
Issue number6-7
DOIs
StatePublished - Jan 1 1989
Externally publishedYes

Fingerprint

Jogging
Knee Prosthesis
Amputees
Prostheses and Implants
Telescopes
Knee
Prosthetics
Momentum transfer
Flow patterns
Gait
Biomechanical Phenomena
Kinematics
Walking
Extremities

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Orthopedics and Sports Medicine
  • Biomedical Engineering
  • Rehabilitation

Cite this

Performance assessment of the Terry Fox jogging prosthesis for above-knee amputees. / Diangelo, Denis; Winter, David A.; Ghista, Dhanjoo N.; Newcombe, W. Roy.

In: Journal of Biomechanics, Vol. 22, No. 6-7, 01.01.1989.

Research output: Contribution to journalArticle

Diangelo, Denis ; Winter, David A. ; Ghista, Dhanjoo N. ; Newcombe, W. Roy. / Performance assessment of the Terry Fox jogging prosthesis for above-knee amputees. In: Journal of Biomechanics. 1989 ; Vol. 22, No. 6-7.
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