If a stage 4 ulcer heals and then reopens without visible bone or tendon, what stage is it considered?

When a stage 4 ulcer heals and then reopens without visible bone or tendon, it is still considered a stage 4 ulcer. This stage is characterized by full-thickness tissue loss with exposure of muscle, fascia, or other structures. Even if the ulcer has healed, the skin's integrity is compromised. If it reopens, it signifies that the underlying issues have not been fully resolved, such as pressure or inadequate blood flow, which are critical factors in chronic wound healing.

In the context of ulcer staging, it's important to note that once an ulcer has reached stage 4, it remains classified as such for documentation and treatment purposes, regardless of subsequent healing and reopening. This classification helps in ensuring appropriate care and monitoring. The staging system is focused on the severity and depth of tissue loss, rather than the current appearance after healing.