LegWorks ATK HydraPro, Instructions For Use Manual, Page: 14 / 24

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ATK HydraPro | Instructions for Use
© Copyright LegWorks 2019 HYD-IFU-02
14
A flexion stop must be provided between the socket and the distal posterior
portion of the knee to prevent hyper flexing of the knee and damage to internal
mechanisms of knee.
In maximum flexion, it is vital that a flexion stop is in effect and contacts the
ATK HydraPro in the proper location. See examples below:
FLEXION STOP
Fig. 12 Absence of Flexion Stop
Fig. 13 Malpositioned Flexion Stop
Fig. 14 Appropriate Flexion Stop
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Incorrect:
No contact point exists between socket and
lower body of knee in maximum flexion.
Damage to knee may occur.
Incorrect:
Socket is in direct contact with extension
assist spring assembly in maximum flexion.
Damage to knee may occur.
Correct:
Socket naturally contacts the body of knee
below the spring assembly. A flexion stop
(e.g. crepe) may need to be affixed to socket
to achieve this.
Alternately, a flexion stop may need to be
affixed to the knee’s pylon adaptor and the
sidewalls surrounding the extension assist
spring.