Muscle atrophy in rheumatoid arthritis.

: The purpose of this paper is to describe some research opportunities in the area of muscle atrophy secondary to arthritis. Future research should utilize quantitative methods of evaluating muscle atrophy such as computerized tomography or ultrasonography. The gross muscle atrophy should be further characterized by muscle fiber type measurements. These techniques as well as biochemical determinations should be utilized to identify mechanisms of muscle atrophy as well as determine ideal methods for reversing muscle atrophy and weakness.