Finger tenosynovitis often occurs on the palmar surface of fingers, and each palmar tendon has a sheath. Tenosynovitis occurs when the tendon sheath is damaged and bacteria invade the sheath. Most pathogenic bacteria are Staphylococcus aureus, which is caused by stab wounds, contusions, barbs or too deep nail cutting.

It often occurs in the palm of the finger, and the affected finger shows signs of redness, swelling, pain and heat, showing flexion, because straightening the finger will cause pain. If not treated in time, after purulent infection, tendon necrosis will make fingers lose their mobility, and pus can also flow into the adjacent tendon sheath and palm space, resulting in total hand disability. The patient was unwell, afraid of cold and had a high fever.