Fabricating The Test Socket - Otto Bock Harmony P3 Technical Information

Procedure

3.4 Fabricating the test socket

Objective
To ensure a good fit, a transparent ThermoLyn check socket is made. It allows the fit to be evaluated, since the col­
our of the skin and the flow properties of the liner are visible.
Required tools and materials
• 755T4=360 outer ring, 755X104=360 vacuum tube (with vacuum sealing ring), 755E9 vacuum pump, 99B25
nylon stockinette, ThermoLyn rigid 616T52=* or ThermoLyn clear 616T83=*
12 | Ottobock
Smooth the plaster model.
Mark the course of the socket brim on the plaster mod­
el. Use the MPT line as a reference.
Anteriorly, the edge is located 2.5 cm (1") proximal
•
to the reference line
Medially and laterally, the edge is located 6 cm
•
(2.5") proximal to the reference line
Create two recesses for the hamstrings in the posterior
socket brim.
Mark a point 5 mm (¼") distal to the reference line
•
for each hamstring.
• Between the points, the socket brim is located
5 mm (¼") proximal to the reference line.
Pull a nylon stockinette over the model.
Complete the vacuum forming process with ThermoLyn
rigid or ThermoLyn clear.
Transfer the course of the socket brim to the prosthetic
socket.
Once the material has cooled, cut the prosthetic socket
along the course of the socket brim.
Harmony System