Which term refers to the inflammation of the synovial sheath surrounding a tendon?

The term that refers to the inflammation of the synovial sheath surrounding a tendon is tenosynovitis. This condition specifically involves the synovial membrane, which produces synovial fluid to lubricate the tendon, and an inflammation of this sheath can lead to pain, swelling, and restricted movement.

Understanding this terminology is crucial in the field of athletic training, as differentiating between types of injuries and conditions helps in diagnosing and formulating appropriate treatment plans for athletes. For instance, tendinitis, while it involves inflammation, refers specifically to the tendon itself rather than the sheath. Myositis pertains to inflammation of muscle tissue, and atrophy relates to the wasting away or decrease in size of muscles, which are distinct from tenosynovitis in both cause and impact.