Name

# Digital Tendons Synovial Sheath

Pronunciation

(dij-i-tl) (si-nO-vE-al)

Notes

A partial or complete covering of synovial tissue over a tendon where it passes through fascial slings, osseofibrous tunnels and ligamentous bands. Among other functions, the tendon sheath promotes the gliding of tendons.

Inflammation of tendons sheaths, or tenosynovitis may occur in the synovial lining in rheumatoid arthritis and the seronegative spondyloarthropathy. Tenosynovitis is prominent on the dorsum of the hand, the fingers and the foot. In some cases, the tendon itself may become affected, leading to a variety of complications, including weakening, subluxation, entrapment and rupture.The most common radiographic finding associated with tenosynovitis and bursitis is soft tissue swelling; a sausage digit may be produced in some patients. Osteoporosis and surface erosion of subjacent bone can also be observed. Arthrography, bursography, tenography, and MR imaging are of value in delineating the nature of the soft tissue swelling.