• Young Uk Kim, Myung Hwan Karm, Yuseon Cheong, Jonghyuk Lee, Yu Gyeong Kong, Se Hun Kim, and Jeong Hun Suh.
• University Seoul, Republic of Korea.
• Pain Physician. 2016 Jul 1; 19 (6): 389-96.

BackgroundNo studies to date have compared bone mineral density (BMD) changes after epidural steroid injection (ESI) between postmenopausal patients taking antiosteoporotic medication and those who are not.ObjectiveThe aim of the present study was to analyze the relationship between ESI and BMD changes in postmenopausal patients according to antiosteoporotic medication use.Study DesignRetrospective analysis.SettingDepartment of Anesthesiology and Pain Medicine at Asan Medical Center, Korea.MethodsWe retrospectively analyzed postmenopausal women who underwent ESI using dexamethasone. All women had received a diagnosis of lumbar spinal stenosis and their BMD had been measured before and after treatment. BMD was evaluated by dual-energy x-ray absorptiometry at the lumbar spine, femoral neck, femoral trochanter, and total femur, and was recorded as absolute g/cm2 and T-scores. A total of 126 patients were included in the final analysis. ESI patients were grouped as follows: group 1 (n = 74) ESI patients who took antiosteoporotic medication; group 2 (n = 52) ESI patients who did not take antiosteoporotic medication.ResultsIn group 1, there were no significant differences between baseline and post-treatment BMD absolute values (g/cm2) in the lumbar spine, femoral neck, femoral trochanter, and total femur. In group 2, significant changes in the post-treatment BMD absolute values (g/cm2) from baseline were observed in the femoral neck (-1.48 ± 3.84%), femoral trochanter (-2.80 ± 7.50%), and total femur (-2.23 ± 4.52%), but not in the lumbar spine (-2.23 ± 4.52%).LimitationsThis study contained a small sample size, no control group, and no long-term follow-up of the BMD changes after ESI.ConclusionsOur data provide new evidence indicating that ESI causes BMD changes in postmenopausal women who do not take antiosteoporotic medication. Thus, we recommend that prophylactic antiosteoporotic treatment be considered for postmenopausal women who require ESI treatment.

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