Lower-Extremity Rotational Problems in Children - The Journal of ...
Lower-Extremity Rotational Problems in Children - The Journal of ...
Lower-Extremity Rotational Problems in Children - The Journal of ...
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42 I.. T. STAFIELI. MARIlYN (ORBETI. (RAI(i WYSS, ANI) HOWARD KING<br />
F<strong>in</strong>d<strong>in</strong>gs<br />
Data on male and female subjects were compared for<br />
each Of the five measurements: foot-progressIon angle. me<br />
dial and lateral rotation <strong>of</strong> the hip. thigh-foot angle. and<br />
angle <strong>of</strong> the transmalleolar axis. Medial rotation <strong>of</strong> the hip<br />
was significantly different (p < ().05 <strong>in</strong> male and female<br />
subjects. <strong>The</strong>refore. separate graphs for medial rotation<br />
were prepared. one for each sex. For all other measurements<br />
there were fl() significant diftCrences (p > ().05 between<br />
80°<br />
@ 0<br />
T\<br />
60°<br />
40°<br />
20°<br />
0<br />
100°<br />
80°<br />
60°<br />
40°<br />
20°<br />
0<br />
0<br />
0<br />
0<br />
0<br />
a<br />
a 0<br />
@ 0<br />
0<br />
0<br />
3<br />
0<br />
00<br />
@0<br />
0<br />
a<br />
0<br />
0<br />
male and female subjects. and their data were pooled for<br />
analysis.<br />
For each <strong>of</strong> the twenty-two age groups we computed<br />
the mean and standard deviation <strong>of</strong> each <strong>of</strong> the measure<br />
ments. <strong>The</strong>se calculations were plotted on graphs (Figs.<br />
2-A through 2-F) show<strong>in</strong>g the means and the po<strong>in</strong>ts for plus<br />
and m<strong>in</strong>us two standard deviations as functions <strong>of</strong> the mean<br />
ages for the twenty-two groups. Smooth l<strong>in</strong>es were drawn<br />
through the data po<strong>in</strong>ts by comput<strong>in</strong>g quadratic functions<br />
us<strong>in</strong>g a non-l<strong>in</strong>ear least-squares fitt<strong>in</strong>g algorithm.<br />
0<br />
0 0<br />
a 0<br />
5 11 13 15-19<br />
Age (years)<br />
Fi( .<br />
Niedmal rotation oil the hip mifcmiiale suh@ects.<br />
O'9<br />
0<br />
3 5 7 9 11 13 15-19 30's 50's 70+<br />
Age (years)<br />
Fi.. 2-I)<br />
I.ateral rotatiomi(if the limp<strong>in</strong> mii@mIe and femiialesubjects conib<strong>in</strong>ed<br />
0<br />
0<br />
0<br />
0<br />
a<br />
70+<br />
2 SD<br />
2 SD<br />
2 SD<br />
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