2022 Volume 13 Issue 11 Pages 1250-1257
Introduction: In the current study, we studied the relationship between Body Mass Index (BMI) and patient characteristics including bone mineral density (BMD), muscle mass, nutrition status, spinal sagittal alignment, and low back pain (LBP) scores in patients with primary osteoporosis.
Methods: A total of 144 women aged ≥60 years with primary osteoporosis were enrolled in this study. BMD at lumbar spine, femoral neck and total hip, body muscle mass corrected by squaring body height, Nutritional status determined from the Controlling Nutritional Status (CONUT) score, spinal sagittal alignment including pelvic tilt, pelvic incidence minus lumbar lordosis and sagittal vertical axis (SVA), and LBP scores including Oswestry disability index (ODI) score and Visual analogue scale (VAS) were reviewed in all patients. Patients were compared after stratification based on BMI into the low BMI group (BMI <20), normal BMI group (≥20 BMI <25) or high BMI group (BMI ≥25).
Results: Patients in the low BMI group had significantly lower BMD, lower corrected body muscle mass, higher CONUT scores, lower SVA levels, lower ODI scores, and lower VAS scores compared with those in the normal group (p<0.05). By contrast, patients in the high BMI group had significantly higher corrected body muscle mass compared with those in the normal group (p<0.05). However, there were no significantly differences of others factors between the normal BMI group and the high BMI group (p>0.05).
Conclusions: Osteoporosis patients with low BMI had maintained their spinal sagittal alignment with little LBP despite reduced BMD, reduced body muscle mass, and poor nutritional status.
