938461PK2/2-0822
9
8
Casting/Scanning a Locking Liner
Before you begin
Allow the user to wear the device for 10
minutes.
(See Section 11
.)
If a scanning method is used
Fit/trim the casting dummy to the size of the distal end of the liner, see 938413.
To reduce the amount of distal pressure within the final socket, the model should be lengthened
by 10-12
mm (depending upon redundant tissue etc.).
If a casting method is used
Fit/trim the casting dummy to the size of the distal end of the liner, see 938413.
We recommend using a casting method that accentuates weight bearing areas such as the
medial condylar flare in conjunction with applying tension to the distal pin; otherwise excessive
distal contact may result in the final socket, giving rise to oedematous swellings corresponding
to the distal perforations as shown below.
Additionally, when fabricating a diagnostic socket, we recommend a 5
mm pelite spacer is used
to further extend/lengthen the socket. When you are satisfied with the fit of the socket (by
adding any necessary socks) the spacer can, if necessary, be removed if excess distal contact
gives rise to distal oedematous swellings.
The softness of the silicone can mask the amount of distal contact that is occurring, this
will only be evident when oedematous swellings are observed.
The use of a diagnostic socket is strongly recommended to assess the amount of distal
pressure/contact that is occurring.
Oedematous
Swellings
Residual Limb
Distal End Surface
Distal End of Liner
(Inside view)
Oedematous
Swellings
938413
Содержание SBWTTCP22
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