Article

OBJECTIVE: To determine the right moment for fitting the first prosthesis, it is
necessary to know when the volume of the stump has stabilized.
The aim of this
study is to analyze variation in measurements of transtibial stump model volumes
using the water immersion method, the Design TT system, the Omega Tracer system,
circumferential measurements, and anthropometric measurements. DESIGN: Nine stump
models were measured on two occasions, each consisting of two sessions. In each
session, two observers measured the model using each of the five methods. The
grand mean volume for each method was calculated. Variance components and their
two-way interactions were calculated of the measurement conditions. Repeatability
coefficients were calculated for each method. RESULTS: The grand means of the
five methods show systematic differences in volume measurements. Error variance
was small (6.4%) relative to the total variance. Method and interaction between
stump model and method contributed 82.6% to the error variance. Repeatability
coefficients of the methods ranged from 45 ml for the Omega Tracer system to 155
ml for the anthropometric measurements. CONCLUSIONS: Error variation in
measurement results can be attributed for 82.6% to measurement method and
interaction between stump model and method. The Omega Tracer system had the
smallest repeatability coefficient, indicating that it is the most reliable
method.

Langue : ANGLAIS