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Denkena, B., Simon, S. and Zager, H. (2011) Knee Exarticulation Prosthesis for Use as Hydraulic Knee Joint Prosthesis for Human Leg, Has Hydraulic Assemblies Causing Motion of Artificial Replacement Member of Leg Sections around Rotary Axis by Movement in Opponent Arrangement. Patent DE102009056074A1, Germany.

has been cited by the following article:

• TITLE: Development of a Multiple Degree of Freedom Knee Disarticulation Prosthesis with Active Leg Length Variation

  AUTHORS: Berend Denkena, Martin Eckl, Dominik Brouwer

  KEYWORDS: Biomechanics, Biomedicine, Prostheses, Knee-Disarticulation

  JOURNAL NAME: Modern Mechanical Engineering, Vol.4 No.4, November 27, 2014

  ABSTRACT: This paper presents a novel design for a knee disarticulation prosthesis. In this design, three hydraulic cylinders form the supporting structure and provide the damping effect at the same time. That way the novel knee joint offers two fundamental advantages compared to the state of the art. First, the combination of a supporting structure and damping element reduces the weight of the prosthesis. Secondly, the use of several cylinders allows the actuation of further degrees of freedom. Additional degrees of freedom can be used to vary the leg length within the gait cycle and hence to optimize the gait behavior.