Rheumatoid Arthritis and the Cervical Spine: A Review on the Role of Surgery

Table 2

American Rheumatologic Association Classification of Global Functional Status [16].

Class I	Complete ability to carry on all usual duties without handicaps
Class II	Adequate for normal activities, despite handicap of discomfort or limited motion at one or more joints
Class III	Adequate for only few or none of the duties of usual occupation or self-care
Class IV	Incapacitated, largely or wholly bedridden, or confined to wheelchair, little or no self-care