Arthritis refers to arthritis, but the term is used to describe about 200 conditions that affect the joints, periarticular and other connective tissue. This is a rheumatism. Joint JIA Ideally suited for a wide range of applications, the PURe® aluminium windows are available as tilt and turn or casement windows. Senior’s innovative door range also features a choice of the PURe® FOLD and PURe® SLIDE options.