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the forearm. During adjustment, please consider the individual strengths,
moving abilities and needs of the child.
Humeral rotation is limited to a total angle of 160°. The friction can be
adjusted via the adjustment screw (fig. 3) using the Allen key (wrench size
3 mm) included in the scope of delivery. During adjustment, please consider
the individual strengths, moving abilities and needs of the child.
3 Technical data
Article number
Weight [g]
Upper arm connection Ø [mm]
Wrist connection Ø [mm]
Length by which the forearm
component can be shortened
relative to the elbow pivot point,
from - to [mm]
4 Handling
4.1 Installation preparation
The two-socket procedure with outer and inner sockets is recommended for
fittings using the12K12. During the two-socket procedure, the lamination
ring is laminated into the outer socket. This allows for easy assembly / dis-
assembly of the elbow component.
4.2 Assembly
For a unilateral fitting, the end of the thumb and the pivot point of the el-
bow joint are relevant to determine the length of the components. In case
of bilateral fittings, priority is given to the prosthesis' functionality. When
adapting the length, make sure that the prosthesis will offer the patient a
high degree of freedom of movement.
Changes in length can be realized by shortening the elbow joint on the
forearm side (see table chapter 3) and by changing the upper arm socket.
The lamination ring must be separated from the component before lamina-
tion. The screw is removed from the elbow joint (fig. 4 arrow) and the lami-
12K12
180
43.5
34
165 – 115
Ottobock | 15
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