1.2 Modification of the Plaster Model
anterior
posterior
≤ 3 cm
ᆺ
ᆻ
ᆼ
Go through the guidelines listed below:
View from medial:
Socket brim for embedding the ramus and the adductor
tendon is on one level (
ᆺ
).
Rectify the circumference below the medial socket brim
as described below:
• Proximal area (
ᆻ
):
Residual limb circumference – max. 1 cm
• Distal area (
ᆼ
):
No rectification based on the residual limb meas
urements
ᆺ
lateral
medial
View from posterior:
Grind the posterior socket area (
ᆺ
-
), so that it runs
nearly parallel to the anterior socket area.
lateral
medial
15°
3,5 cm
≤ 2 cm
ᆺ
ᆻ
ᆽ
ᆼ
View from anterior:
For easy donning of the socket a flat moulding of the
medial socket brim is important (
ᆺ
- height 3.5 cm).
Apply plaster as required accordingly (
).
Flatten the anterior support area (
ᆽ
-
).
To protect the end of the femur keep the shape to later
al and posterior done during the 1st stage of the cast.
Max. 2 cm between the medial socket brim and the top
of the greater trochanter (
ᆻ
).
anterior
posterior
≈ 2 cm
≤ 8 cm
View from lateral:
The anterior shape and posterior shape should be par
allel.
4
| Ottobock
Technical Information - ProSeal
ProSeal
© Ottobock · 647G932=EN-01-1206
1 Technical Information - ProSeal
1.1 Plaster Cast for a ProSeal Socket
Materials:
• Water basin (754W5)
• Scissors (719G1 or 719G2)
• Copying pencil
• Cotton stockinette - 15 and 30 width
(623T1=15/30)
• Biplatrix plaster bandages - 15 and 20 cm width
(699G20=3X15/20)
• Optional: Measuring tool (for taking measurements
of the residual limb)
ᆺ
ᆻ
ᆼ
Cut the medial brim of the liner so that it runs 1 cm
below the perineum.
The lateral brim of the liner is at the same height as the
brim of the prosthetic socket.
Isolate the trimmed and donned liner on the outside
with soap solution.
Pull a cotton stockinette (
ᆺ
- 15 cm width) over the
residual limb. The distal half of the residual limb
remains without stockinette. Thus the distal part of the
plaster cast will remain very clean on the inner side.
This is important for the modification of the plaster mod
el.
Cut an oval hole in the lower part of another cotton
stockinette (30 cm width). The donned stockinette
serves as a protection layer against the plaster (
ᆻ
).
The cut hole serves as a reference line for the trim line
in the posterior area below the gluteus musculature (
ᆼ
- finger).
Take measurements of the residual limb and document
them.
IMPORTANT:
Measure the 1st residual limb circumfer
ence measurement 3 cm below the perineum. This
measurement is crucial for modification of the plaster
model.
Ottobock |
1
ProSeal
© Ottobock · 647G932=EN-01-1206
