noun
tenosynovitis
Medical term for inflammation of the tendon sheath. Often associated with repetitive strain injuries.
手首の使いすぎで腱鞘炎になった。
I got tenosynovitis from overusing my wrist.
noun
tendonitis;
More general term for tendon inflammation, sometimes used interchangeably with 腱炎. In everyday language, 腱鞘炎 is often used loosely for tendonitis.
See also: 腱炎
腱鞘炎は腱炎の一種です。
Tenosynovitis is a type of tendonitis.