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Table 9 Clinical outcome at 2-year follow-up in the surgery group for patients with increased multifidus muscle fat versus those without

From: Fat in the lumbar multifidus muscles - predictive value and change following disc prosthesis surgery and multidisciplinary rehabilitation in patients with chronic low back pain and degenerative disc: 2-year follow-up of a randomized trial

  No change in multifidus muscle fat Increased multifidus fat in 1 or 2 levels p-value
Pain at 2 year (mean (SD)) (n = 54/7) 29.2 (26.2) 63.0 (33.5) <0.01*
ODI at 2 year (mean (SD)) (n = 56/7) 16.8 (14.2) 42.6 (20.3) <0.001*
Work status at 2 year (n/ % working) (n = 55/6) 36 (65.5) 1 (16.7) 0.03#
  1. ODI, Oswestry Disability Index
  2. *Independent-sample t-test
  3. #Mid-P exact test