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KMID : 1123420190130010038
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Journal of Korean Society for Prosthetics and Orthotics
2019 Volume.13 No. 1 p.38 ~ p.43
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Differences in Gait Patterns of Unilateral Transtibial Amputees with Two Types of Energy Storing Prosthetic Feet
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Yang Hea-Eun
Ahn Dong-Young
Sim Woo-Sob
Ahn Da-Hyun
Yang Hee-Seung
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Abstract
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Background/Aims: Energy storing foot for transtibial amputation is increase in use since this reduces the user’s energy consumption and has advantages on uneven terrain. Gait pattern can be affected by its shape, but there is no study that evaluate the influence of shape of energy storing foot to our knowledge. Here we conducted a study to evaluate if there is any difference in gait pattern when applying two different shapes of energy storing foot.
Methods: Ten unilateral transtibial amputees were recruited. Two different shapes of dynamic response foot 1C30 Triasⓡ, 1C60 Tritonⓡ were applied to each subjects. The main differences was split forefoot. Spatiotemporal, kinematic and kinetic data was obtained through gait analysis. Differences between intact and prosthetic side, and differences between the two prosthesis were assessed.
Results: On side to side comparison, cadence asymmetry with 1C30 Triasⓡ was observed. Ankle plantarflexion at end of stance and ankle supination at onset of preswing was smaller with both prosthetic feet than intact side. Other spatiotemporal, kinematic, kinetic data showed no significant differences on side to side comparison. On between prosthesis comparison, stance and swing ratio and ankle dorsiflexion through midstance was closer to normal with 1C60 Tritonⓡ than 1C30 Triasⓡ. Other spatiotemporal, kinematic, kinetic data showed no significant differences on between prosthesis comparison.
Conclusion: Both energy storing feet implements symmetric gait inunilateral transtibial amputee who are functionally independent in daily living. And 1C60 Tritonⓡ showed gait pattern closer to normal than 1C30 Triasⓡ in present study.
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KEYWORD
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Amputation, Prosthesis fitting, Gait
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