Localized skin lesion Draining sinus tract in skin 2023-12-31T08:27:55Z Tract under skin draining associated abscess Draining tract in skin A soft tissue ulcer can show a sinus tract leading to a deeper soft tissue abscess and may occasionally extend to a joint. Chronic osteomyelitis can be associated with a sinus tract and cloaca (opening or rupture of bony cortex overlying an area of osteomyelitis) draining granulation tissue, pus, or necrotic debris from the bone to the skin. A sinus tract is an abnormal channel that originates from the skin or a mucous surface to a deep-seated focus of suppuration. Discharging sinus