MADSEN et al. Loading Device to Evaluate Prosthetic Fit
Email: mark-madsen@uiowa.edu
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Set tables X 21 px       Table head &
or up to 43 1/2 px     title 10/12 TR
as necessary to fit      Table body      full measure
                          9/11 TR        hairline rule

Table 1.
Subject height, weight, and applied force.

Subj Height Weight Force 1 Force 2

1 203 107 550 900
2 160  48 250 500
3 180 114 550 950
4 185 118 600 --
5 180  70 350 700
6 180  95 475 950
7 182  68 340 680
8 178  90 450 900
9 164  71 350 700
10 160 110 550 950
11 173  75 375 750
12 180 107 750 --
13 183  95 480 950
14 178  61 300 600
15 188 100 500 950
16 170  89 450 900
17 183 109 550 950
18 188 107 500 950
19 190  79 390 790

Subj=subject; height in cm; weight in kg; applied Force 1 and Force 2 in N.

mads                                      Table fn
                                           8/9 TR
                 double hairline rule



Figures

Figure 1. Prosthetic load device. The subject sits in the chair and pushes against the footplate to apply force to the prosthesis. A digital force gauge coupled to the footplate monitors the applied force.



Figure 2. Photographs of the prosthetic loading device. A. The apparatus is positioned on the CT table, allowing the residuum to be scanned under load. B. Close-up photograph of the digital force gauge.



Figure 3. Applied force data from sample studies. The plots show the stability of the applied force during the CT studies. The dashed vertical lines delineate the scanning interval.



Figure 4. Tomographic evaluation of prosthetic fit. The upper images show coronal and sagittal views of a residuum under (A) no-load and (B) full body weight loading. The lowest row of images shows radial plots from the same limbs aligned in the same orientation as the coronal slices. The radial distance from the centroid of each transaxial slice of the residuum to the surface is represented as a grayscale level under no-load (A) and full body weight (B) conditions. The radial samples are plotted at 1-° intervals. The far right panel (C) contains deformation information derived from the difference of the no-load and full body weight load conditions (C=A-B). The grayscale ranges from 0 mm to 32 mm in images A and B and the grayscale range is -15 mm to 15 mm for image C.



 

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Last revised Tue 05/30/2000 .