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OBJECTIVE
Laminectomy and fusion is a standard technique in patients with multilevel degenerative cervical myelopathy (DCM). However, this procedure is associated with a reduction of cervical range of motion. This study examines how patients are subjectively restricted in cervical spine mobility, how they are impaired in activities of daily living (ADLs) and how this affects their quality of life.

METHODS
In this single-center, retrospective cohort study patients with DCM operated via laminectomy and fusion over at least four segments were included. Clinical outcome was assessed via pain scores, NDI, patient satisfaction index, mJOA and SF-8. The patient-reported restriction of cervical spine mobility and the resulting impairment for various ADLs were acquired by a newly developed five-step score.

RESULTS
53 patients could be evaluated. 75.5 % were satisfied with the treatment. 41.5 % reported a moderate restriction of mobility, followed by severe restriction in 34.0 % and mild restriction in 15.1 %. Of the various directions of movement, flexion was indicated as the least restricted. Overhead work was the most impaired activity (26.4 % severe restriction, 37.7 % complete restriction). 60.4 % experienced none to moderate impairment when driving a car. The mean values for the SF-8 were 37.5 for the physical and 47.8 for the mental component summary.

CONCLUSION
Despite multilevel fusion and the reduced physical component summary of the SF-8, more than half of the patients reported only mild to moderate restriction. The concern about a complete impairment in various ADLs is unfounded for the majority of patients.