The Journal of Bone and Joint Surgery, Vol 69, Issue 2 203-211, Copyright © 1987 by Journal of Bone and Joint Surgery, Inc
Measurement of the shape of the surface of the back in patients with scoliosis. The standing and forward-bending positions
IA Stokes and MS Moreland
In order to determine if the configuration of the trunk is altered when a
patient changes from an upright to a forward-bending position, the shape of
the surface of the back of fifty-six patients who had adolescent idiopathic
scoliosis was recorded, by means of Raster stereophotography, with each
patient in three postures: standing erect, bending forward with the hands
between the knees (forward bend 1), and bending forward with the hands
touching the toes (forward bend 2). The effect of placing one foot on a
block to produce a limb-length difference was also studied in the standing
position (thirty patients) and in the forward-bending position (eighteen
patients). The degree of rotation of the surface of the back and of
kyphosis and lordosis of the surface of the trunk was measured from
sections in the sagittal plane that were plotted from the computerized
measurements of the surface of the back. Qualitatively similar rotation of
the surface of the back was found in both the standing position and the
forward-bending position. When the patient was in the forward-bending
position, the degree of rotation of the surface of the back was minimally
changed in the thoracic region but increased in the lumbar region. The
amount of rotation of the surface of the back was similar in both forward
bending with the hands to the knees and forward bending with the hands to
the toes.(ABSTRACT TRUNCATED AT 250 WORDS)