RSI: De Quervain's Tenosynovitis

RSI: De Quervain's Tenosynovitis


What causes de Quervain’s Tenosynovitis?

Tenosynovitis is caused by the thumb tendons getting stuck together in the wrist region. The tendons swell and moving the thumb causes pain. Most often tenosynovitis is due to overstraining caused by one-sided repetitive movements and is frequently seen in those who use computers 6-10 hours a day.


  • Swelling near the base of the thumb
  • Pain in the base of the thumb
  • Difficulty moving the thumb and wrist when doing something that involves grasping or pinching
  • A “sticking” or “stop and go” feeling when trying to move the thumb 

What we recommend

Built with a fully articulating, adjustable thumb support, the Unimouse is designed to keep your thumb at rest while offering a multitude of posture options.

It’s centralized position in front of the keyboard encourages ambidextrous mouse usage, and it’s design enables users to work without using their thumbs.