Ottobock 1E80 Serie Instructions D'utilisation page 20

3) In order to ensure that the polyurethane is thoroughly mixed, scrape the sides and bottom of
the container while stirring.
4) Slowly pour the polyurethane into the mould to the side of the spacer ring.
Trapped air bubbles must be avoided.
5) NOTICE! Do not exceed the marked line on the footplate when pouring.
6) The height of the joint to the prosthetic socket can be influenced by changing the angle of the
prosthesis.
7) If the polyurethane settles as it hardens, add more until the level of the marked line on the
footplate is reached.
8) After casting, allow the glued joint to harden undisturbed (min. 3 h / min. 20 °C / 68 °F).
Tempering the polyurethane (photos see 646T113*, Section 3.4.4)
1) Place the prosthesis with the mould into the heating oven on its side and temper it to its final
strength (16 h at 80 °C / 176 °F).
2) Then remove the prosthesis from the heating oven and allow it to cool.
3) Remove the mould.
4) Remove excess polyurethane from the bottom of the footplate.
5) Trim excess polyurethane on the socket edge.
6) Clean the prosthesis with isopropyl alcohol.
5.7 Finishing the Prosthesis
Preparing the footshell (photos see 646T113*, Section 3.5.1)
1) The footshell is adapted step-by-step according to the instructions below, so that the pros­
thesis fits exactly in the footshell and the edge of the footshell fully contacts the prosthetic
socket.
2) Grind the proximal edge of the footshell to 0 on the inside.
3) Remove the wedges in the heel area.
4) Insert the prosthesis into the footshell as far as possible.
5) Use a washable marker to mark an initial trim line.
6) Trim the edge step-by-step.
7) Grind the edge from the inside.
8) Check the fit by inserting the prosthesis.
9) Repeat the process until the prosthesis fits exactly into the footshell and the edge of the foot­
shell fully contacts the prosthetic socket.
Foaming the footshell (photos see 646T113*, Section 3.5.2)
1) Practise inserting the prosthesis into the footshell quickly and confidently.
2) Place the shoehorn within reach.
3) Apply plaster parting agent cream to the outside of the footshell in order to prevent the adhe­
sion of fill foam.
4) INFORMATION: Work quickly when processing the foam.
5) Add component A to the container with component B.
6) Mix the components by stirring quickly with a stir stick (stirring time approx. 10 s).
7) Pour most of the fill foam into the footshell.
8) Distribute the fill foam in the footshell by tilting it back and forth.
9) Insert the prosthesis into the footshell.
10) If required, raise the upper edge of the footshell and add more fill foam.
11) In order to avoid changing the heel height due to excessive fill foam between the footplate and
footshell, push down on the prosthesis with moderate pressure until the foam has set.
12) Remove foam residue from the prosthesis so that the edge of the footshell fully contacts the
prosthetic socket.
13) Add buckles or straps to the prosthesis. Position and secure pads if applicable.
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