No difference in long-term trunk muscle strength, cross-sectional area, and density in patients with chronic low back pain 7 to 11 years after lumbar fusion versus cognitive intervention and exercises

Reduced muscle strength and density observed at 1 year after lumbar fusion may deteriorate more in the long term.To compare the long-term effect of lumbar fusion and cognitive intervention and exercises on muscle strength, cross-sectional area, density, and self-rated function in patients with chronic low back pain (CLBP) and disc degeneration.Randomized controlled study with a follow-up examination at 8.5 years (range, 7-11 years).Patients with...