Otto Bock 8E70 Instructions For Use Manual page 34

Moving the thumb from the opposition to the lateral position
Grips with opposed thumb (the thumb is opposite the palm)
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Tripod grip
The index finger and middle finger are closed simultaneously with
the thumb until the three fingers touch. Ring and little fingers con­
tinue to close until they meet resistance or the close signal stops.
The thumb position has to be adjusted for this grip so it can be car­
ried out precisely (see Page 46).
Application examples: this grip can be used to grasp and hold
objects (e.g. pens, coins).
Power grip
All fingers close until they encounter an object or the close signal
stops. The thumb then moves towards the palm as well.
Application examples: this grip can be used to hold round objects
(e.g. fruit, balls, glasses).
Finger adduction
By spreading the fingers, a flat, thin object (< 3 mm/< 0.12 inch)
can be held between the finger joints when closing the hand.
Spreading the fingers is most effective with the power grip. It can
also be used with the key grip and finger point. This grip cannot
be selected in the adjustment software.
Application examples: makes it possible to hold thin objects effect­
ively (e.g. magazine, cutlery, toothbrush).
Hook grip
This grip corresponds to a power grip with the fingers only partly
closed. It makes it possible to engage objects with carrying loops
and can also be initiated from the relaxed hand position. This grip
cannot be selected in the adjustment software.
Application examples: this grip makes it possible to carry bags.
1) Firmly grasp the base of the thumb with the
free hand.
2) Apply controlled pressure to push the
thumb outwards until it is lateral to the
palm.