To the Editor.—
I have read the letter from Ernest Weitz, MD (1980;244:1673), regarding his observation on a 15-year-old boy with back pain after exercise and the excellent reply by Irwin M. Siegel, MD. I would like to add that there are also two other causes for the pain problem that this 15-year-old boy complained of. Both of these pertain to specific areas of myofascial irritation. One can occur in the quadratus lumborum muscle1 on the affected side, and the other pertains to a classic area of irritation in the gluteus maximus muscle2 near its origin just below the mid-posterior iliac crest.
Margoles MS. Back Pain. JAMA. 1981;245(12):1215. doi:10.1001/jama.1981.03310370013007
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