Design characteristics of pediatric prosthetic knees

@article{Andrysek2004DesignCO,
  title={Design characteristics of pediatric prosthetic knees},
  author={Jan Andrysek and Stephen Naumann and William L. Cleghorn},
  journal={IEEE Transactions on Neural Systems and Rehabilitation Engineering},
  year={2004},
  volume={12},
  pages={369-378}
}
We examined whether pediatric prosthetic single-axis knees can theoretically provide the beneficial functional characteristics of polycentric knees and the design considerations needed to realize this. Five children and their parents provided subjective opinions of the relative importance of functional requirements (FRs) for the knee. FRs related to comfort, fatigue, stability, and falling were found to be of high importance, while sitting appearance and adequate knee flexion were of lower… 

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References

SHOWING 1-10 OF 35 REFERENCES

Conventional 4-bar linkage knee mechanisms: a strength-weakness analysis.

TLDR
The present 4-bar linkage knees-with-lock are a derivation of the free-moving knees, which are of no relevance when walking with a fixed knee, and there is a demand for a simple knee mechanism that moves freely during the swing phase, locks at the beginning of the stance phase, and unlocks at the end of it.

Four-bar linkage prosthetic knee mechanisms: Kinematics, alignment and prescription criteria

TLDR
The kinematics of several types of four-bar mechanisms are described, and the differences and prescription criteria for three different classes ofFour-bar linkage mechanisms currently available for fitting to amputees are discussed.

Knee mechanisms for through-knee prostheses

TLDR
The stability diagram illustrates how voluntary and involuntary stability can be utilized by using different polycentric linkage mechanisms for through-knee amputees.

The influence of limb alignment on the gait of above-knee amputees

  • Lang Yang
  • Biology, Medicine
    Journal of biomechanics
  • 1991

Enumeration of human knee prostheses--an overview.

TLDR
An attempt has been made to enumerate the available human knee-prostheses, both implants and external prostheses, according to their motion to benefit kinematicians and designers to analyze the available mechanisms and make necessary improvements.

Characteristics of the Child Amputee Population

TLDR
A census of patients treated at member clinics of the Association of Children's Prosthetic-Orthotic Clinics (ACPOC) was conducted to obtain a rational basis for children's prosthetic design, development, research, and educational activities.

The influence of stance-phase knee flexion on the vertical displacement of the trunk during normal walking.

A polycentric knee-ankle mechanism for above-knee prostheses.