Technical Data - Otto Bock 12S4 Instructions For Use Manual

2.4 Function
The Ottobock Shoulder Joints are available in the following versions:
12S4 Ottobock Shoulder Joint with lamination ring
12S7 Ottobock Ball Shoulder Joint with threaded stud
The 12S4 Ottobock shoulder joint as well as the 12S7 Ottobock ball shoul-
der joint have two degrees of freedom.
They allow for anteversion/retroversion and abduction/adduction movements. The
Ottobock Shoulder Joints are connected to the elbow component with bars.
Connection of an Ottobock modular prosthesis to the 12S7 Ottobock Ball
Shoulder Joint is possible with the 10R2 Adapter.

3 Technical data

Article number
Weight [g]
4 Handling
4.1 Preparing for assembly
For assembling the Ottobock Shoulder Joints you need a well fitting inner
socket. Attach a shaped part which may be needed for shoulder compensa-
tion to the inner socket.
For position and length adjustment, temporarily attach all single components
to the inner socket.
In case of unilateral fittings, the distal end of the thumb and the centre of
rotation of the elbow joint are the determining factors for the length of the
components (Fig. 1).
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.
With the 12S4 Ottobock shoulder joint, length adaptations are possible
by shortening the upper arm bars. Make sure, however, that there will be
a distance of at least 6 mm between the end of the bar and the fixing hole
centre. This will ensure full surface contact of the fixing screw.
12S4
135
12S7
80
Ottobock | 15