- Tenosynovitis = tendovaginitis = inflammation of a tendon and its synovial sheath
- Females > males
- Etiology
- Repetitive use of tendon
- Rheumatological diseases
- Bacterial infection
- Tendons of the fingers and wrist are most commonly affected
- Clinical features
- Pain on passive extension of affected tendon
- Finger slightly flexed at rest
- Special types
- Stenosing tenosynovitis (trigger finger)
- Thickening of one of the annular pulleys causes the finger to be locked in a flexed position
- Idiopathic
- Mostly affect ring finger or thumb (trigger thumb)
- De Quervain tenosynovitis
- Thickening of the abductor pollicis longus and extensor pollicis brevis
- Due to repetitive abduction and extension of the thumb
- Causes swelling of radial styloid process
- Treatment
- Surgical incision of the affected tendon