RHEUMATOLOGY, cilt.38, ss.627-630, 1999 (SCI İndekslerine Giren Dergi)
Objectives. We had noted cogwheel rigidity in a number of patients with rheumatoid arthritis (RA). Based on this finding, we aimed to investigate formally the presence of rigidity and cogwheeling in RA patients. Our secondary aim was to survey the co-existence of RA and Parkinson's disease (PD).