Limb
Volume Calculator V2.0 Formula
The Limb Volume Calculator V2.0
has improved limb volume measurement accuracy, and features
a new volume formula.
Many systems use a cylinder based
formula. However, clinical trials have proved this to be less
than accurate and prone to data entry errors. The drawbacks
are summarised as follows:
1. The formula consistently ‘underestimates quantity
of percentage excess volume’.
2. Many systems wrongly instruct
users to enter the circumference of the ‘end sections’.
This results in inaccurate figures.
The Limb Volume V2.0 calculator
uses, by default, a new truncated cone formula. This is is
intrinsically more accurate than cylinder formulas, as most
extremities are shaped like a cone rather than like a cylinder.
The formula also uses the last circumference reading. This
is intuitive and naturally follows measurement reading methods
used by practitioners.
To assist users migrating from
older systems, the calculator formula can be reverted back
to cylinder or retro Limb V0.
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