Lateral curvature of the spine and round shoulders . acted and do not permit a free movement.^Lateral curvature of the spine frequently coexists. The affection is not wholly one of the spine, but implies a disturb-ance of relations from the feet upward because an increase in thebackward curve of the spine implies a forward curve or forward dis-placement somewhere else to balance it. The dorsal spine in otherwords cannot become more convex without a compensating lumbar 1 E. H. Bradford: Round Shoulders, Orth. Trans.,vol, x, page 162. ROUND BACK 199 curve forward, or a forward displacement of th
Lateral curvature of the spine and round shoulders . acted and do not permit a free movement.^Lateral curvature of the spine frequently coexists. The affection is not wholly one of the spine, but implies a disturb-ance of relations from the feet upward because an increase in thebackward curve of the spine implies a forward curve or forward dis-placement somewhere else to balance it. The dorsal spine in otherwords cannot become more convex without a compensating lumbar 1 E. H. Bradford: Round Shoulders, Orth. Trans.,vol, x, page 162. ROUND BACK 199 curve forward, or a forward displacement of the pelvis and legs if thelumbar spine is involved in the backward dorsal curve. Round shoulders, therefore, is not to be considered or treated asan affair wholly concerning the dorsal spine and shoulders. Oncloser analysis these cases will be found to fall into four not very well-defined groups. Transition cases of all grades are seen, and thedivision is mentioned simply to aid in the study of the cases and theirtreatment. The groups are as follows:. Fig. 172.—Round Back. 1. Round Back.—The dorsal and lumbar spine form one convexitybackward, which is physiologically a persistence of the infantileposition (page 21). A lordosis is apparently of ten present, but onidentifying the landmarks this will be found to be merely the up-ward and forward slope of the sacrum and that the lumbar spinedoes not share in it. 2. Round Hollow Back.—The dorsal spine is bowed backward,but the lumbar spine is bowed forward. The appearance of roundshoulders is present, but the general attitude is modified because the 200 FAULTY ATTITUDE pelvis apparently has a greater inclination than in round back, the abdomen is prominent, and the gross appearance is the same as in round back (Fig. 173). 3. Round Upper Back.—In certain cases the dorsal backward curve occurs in the upper part of the spine and gives an especially noticeable forward thrust to thehead and a prominence betweenthe scapulas. These c
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