• Lisa G Oestergaard, Claus V Nielsen, Cody E Bünger, Karen Svidt, and Finn B Christensen.
• Department of Occupational Therapy and Physiotherapy, Aarhus University Hospital, Noerrebrogade 44, 8000 Aarhus C, Denmark. lisaoest@rm.dk
• Eur Spine J. 2013 Aug 1;22(8):1884-90.

BackgroundThe number of patients undergoing lumbar spinal fusion procedures (LSF) has risen in recent years, but only few studies have examined different rehabilitation strategies for this patient group.PurposeTo evaluate the impact of initiating rehabilitation either 6 or 12 weeks after a LSF based on the patients' physical performance using the 6-min walking test (6MWT) and the Åstrand Fitness test (AF-test) as measurement.MethodsA multicentre RCT including 82 patients with degenerative disc diseases undergoing LSF randomly assigned to initiate rehabilitation either 6 or 12 weeks after surgery. Both groups received the same group-based rehabilitation. The main outcome measures were the 6MWT and the AF-test, secondarily questionnaire-based measures. Follow-up at baseline as well as at 3, 6 and 12 months after surgery.ResultsComparing the two groups no statistically significant difference was found in walking distance or fitness over time. In both groups, the patients achieved an overall increase in walking distance (p < 0.01), but no improvement in fitness. The 6MWT showed significant correlation (-0.37 to -0.59) with the questionnaire-based outcome measures (p < 0.01). The AF-test did not correlate to either the 6MWT or any of the questionnaire-based outcome measures.ConclusionNo difference was found in the effect of initiating rehabilitation either 6 or 12 weeks after LSF on the patients' physical performance in terms of fitness and walking distance. The 6MWT showed fair to moderate correlation to the questionnaire-based outcome measures. The AF-test showed no significant independent value, and we question its use in LSF patients.

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