Advances for Prosthetic Technology by Robert LeMoyne

Author:Robert LeMoyne
Language: eng
Format: epub
Publisher: Springer Japan, Tokyo

5.7 Conclusion

The evolutionary trend of the transtibial prosthesis originates from load-bearing and primarily structural tasked designs, such as the Solid Ankle Cushioned Heel (SACH) prosthesis . With the role of the plantar flexors of the lower limb well established during the later 1980s, the objective shifted toward the developing prostheses capable of imparting energy about the stance phase of gait, either through energy absorbing elasticity with subsequent release or powered actuation.

All of these prosthetic application strategies share the commonality of the need to interface the residual limb to the prescribed prosthesis. A custom made socket is uniquely designed for the subject, individualizing function and comfort. A liner enables further comfort about the interface with improvements in energy absorption quality. The suspension serves the critical role of securing the prosthesis, especially during gait, while minimizing pistoning , which may severely impair a subject’s quality of life.

Before comprehensively addressing the powered prosthesis strategy, the next aspect of the evolutionary continuum for prosthetic technology shall be encompassed in the following Chap. 6: ‘Energy Storage and Return (ESAR) prosthesis’. The Energy Storage and Return (ESAR) prosthesis incorporates a select material that is capable of storing potential energy during stance phase onset and releasing the energy on the more terminal aspects of stance. One type of prosthesis that first satisfied these design criteria is the Seattle Foot .

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