Tenosynovitis

Tenosynovitis
Other names	tendosynovitis
Congenital stenosing tenosynovitis of the thumb in a 3-year-old child. The thumb is unable to be straightened.
Specialty	Physical medicine and rehabilitation

Tenosynovitis is the inflammation of the fluid-filled sheath (called the synovium) that surrounds a tendon, typically leading to joint pain, swelling, and stiffness. Tenosynovitis can be either infectious or noninfectious. Common clinical manifestations of noninfectious tenosynovitis include de Quervain tendinopathy and stenosing tenosynovitis (more commonly known as trigger finger).^[1]