What is tendinitis of the thumb?
Tendinitis of the thumb is the inflammation of the synovial sheath through which pass the tendons that attach the thumb to the wrist (at the level of the “anatomical snuff-box”). The condition is provoked by activities that require the repeated use of the thumb (often for professional reasons) combined with a certain force, such as opening and closing movements when using scissors or shears. It is also called “De Quervain’s disease” or “tenosynovitis”.