Tendonitis (Tenosynovitis): Or something else? Differential Diagnosis

Musculoskeletal system and connective tissue (M00-M99).

  • Tenovaginitis stenosans (synonyms: tendovaginitis stenosans de Quervain; Quervain’s disease; Quervain’s tendovaginitis; “housewife’s thumb,” digitus saltans/snapping finger; snapping finger) – this is a constricting tendovaginitis; in tendovaginitis stenosans de Quervain, the tightness is localized to the 1st extensor tendon compartment. Tendovaginitis stenosans de Quervain (also called housewife’s thumb), can result from overuse, tendon sheath irritation, a tendon sheath inflammation and with some individual predisposition.
  • Osteophytes (bone outgrowths) – circumscribed bone neoplasms that originate from the periosteum in the context of degenerative bone changes (eg osteoarthritis).

Injuries, poisoning and other consequences of external causes (S00-T98).

  • Distortion (sprain)
  • Bone chips