tenosynovitis Inflammation of a tendon sheath caused by strain, calcium deposits, hypercholesterolaemia, gout, rheumatoid arthritis, etc. Claimed to be relieved by high intakes of vitamin B6, some 50 times the reference intake, but there is little evidence. See also carpal tunnel syndrome.

tenosynovitis (peritendinitis) (ten-oh-sy-noh-vy-tis) n. inflammation of a tendon sheath, producing pain, swelling, and an audible creaking on movement. It may result from a bacterial infection or occur as part of a rheumatic disease.