• Tomohiko Nishigami, Akira Mibu, Michihiro Osumi, Kouki Son, Shyogo Yamamoto, Saori Kajiwara, Katsuyoshi Tanaka, Ayako Matsuya, and Akihito Tanabe.
• Department of Nursing and Physical Therapy, Konan Woman's University, 6-2-23, Morikita-machi, Higashinada-ku, Kobe, 658-0001, Japan. Electronic address: t-nishi@konan-wu.ac.jp.
• Man Ther. 2015 Feb 1; 20 (1): 63-7.

AbstractClinically, perceived image of the lower back and the two-point discrimination (TPD) test are used as markers for evaluating alterations of cortical reorganization. The purpose of the present study was to examine whether TPD and selected clinical findings are different in subgroups of individuals with chronic nonspecific lower back pain (CNLBP) based on body image drawings. Forty-two patients with CNLBP and seventeen healthy individuals were recruited. Perceived body image, TPD and clinical profiles was measured. Of the patients with CNLBP, 42.8% had a normal perceived body image, 28.5% an expanded image, and 28.5% a shrunken image. The TPD distance threshold was significantly larger for the expanded subgroup (13.3 ± 6.8 mm) compared with the control (5.5 ± 3.8 mm; Difference, 7.8; 95%CI, 1.83 to 13.66; p < 0.05) and normal subgroups (4.5 ± 5.5 mm; Difference, 8.8; 95%CI, 2.90 to 14.59; p < 0.05). No significant differences in pain intensity, duration of pain, Roland Morris Disability Questionnaire (RDQ), and Pain Catastrophizing Scale (PCS) scores were found between three body image subgroups. Our results suggest that TPD is increased in patients who report an expanded perceived image of the lower back compared with healthy individuals and patients who report a normal image. The effectiveness of new rehabilitation techniques may be evaluated by assessing perceived image of the lower back and TPD values for patients with CNLBP before and after treatment.Copyright © 2014 Elsevier Ltd. All rights reserved.

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