Hello Gareth,
If you want to analyze LLD with a plantar pressure measuring system,
you better do it with walking, not statically. LLD mostly shows up
through a left-right asymmetry of the pressure distribution. An
easy indicator of LLD is a longer propulsion time (or shorter heel
contact time) for the shortest leg though sometimes the inverse may
occur.. Secondary indicators are a reduced peak heel pressure and a
more lateral position of the CoP.
Be aware, however, that the above applies to a * functional* LLD,
though structural LLD mostly causes a functional LLD too.. One should
keep in mind that a functional LLD can be introduced without a
structural LLD being present, because a functional LLD can be
introduced by pronation , functionally shortening the leg, or by
invertion, functionally lengthening the leg .
We determine structural LLD by inspecting the SIAS and PSIAS height
statically and check if a positive LLD appears on the pressure
recordings. If they do, we will correct, otherwise we assume that
they are properly compensated for , especially if there are no
further complaints.
I also hope that Howard and Bruce my fill in with some more useful suggestions.
If more questions, feel free to ask. ( I am also using a Footscan system)
Regards,
Bart
>Mailbase,
>
>We have been using the RS Scan pressure mesurement
>system for additional analysis alongside SiliconCoach
>to help assess gait.
>
>Recently we have been using it to measure the pressure
>differences of patients that have LLD while standing
>static. Heel raises of varying heights have been
>placed under the shorter leg showing up a balance in
>pressure through the rear-foot.
>
>Does anyone have anything to add to this topic, trends
>they have seen? Or alternatively evidence they have
>obtained?
>
>regards,
>
>Gareth
>
>=====
>Gareth Milne
>PODIATRIST
>
>Sportsmed
>156 Bealey Avenue
>Christchurch
>New Zealand
>
>+64 3 366 0620
>+64 21 136 1244
>
>Find local movie times and trailers on Yahoo! Movies.
>http://au.movies.yahoo.com
>
>-----------------------------------------------------------------
>This message was distributed by the Podiatry JISCmail list server
>
>All opinions and assertions contained in this message are those of
>the original author. The listowner(s) and the JISCmail service take
>no responsibility for the content.
>
>to leave the Podiatry email list send a message containing the text
>leave podiatry
>to [log in to unmask]
>
>Please visit http://www.jiscmail.ac.uk for any further information
>-----------------------------------------------------------------
--
*******************************************************************
Bart Van Gheluwe
Laboratory of Biomechanics
Vrije Universiteit Brussel -Fac. LK
Vakgroep BIOM
Pleinlaan 2, 1050 Brussel, Belgium
Tel.: 02/629.27.33 (31)
Fax: 02/629.27.36
*******************************************************************
-----------------------------------------------------------------
This message was distributed by the Podiatry JISCmail list server
All opinions and assertions contained in this message are those of
the original author. The listowner(s) and the JISCmail service take
no responsibility for the content.
to leave the Podiatry email list send a message containing the text
leave podiatry
to [log in to unmask]
Please visit http://www.jiscmail.ac.uk for any further information
-----------------------------------------------------------------
|