The purpose of this research is to evaluate the ability of a Nitric Oxide (NO) Sensor to collect NO measurement data from an open wound. Previous research suggests that NO levels may indicate the stage of healing the wound is in. This study is being done to determine if the NO Sensor can measure how much NO is in a participant's wound. The researcher will place the NO Sensor into a participant's wound to collect NO measurements for 30-60 minutes. The participant will then have 2 follow-up appointments to see how the wound heals over time.

Inclusion Criteria:

1. Extremity injury
2. Wound surface area 2-10 cm in diameter
3. Wound amenable to NO Sensor placement
4. Age at the time of consent ≥ 22 to ≤ 65 years
5. Cognitively able to undergo informed consent discussion and understand the study

Exclusion Criteria:

1. Chemotherapy
2. Pregnancy
3. Preexisting immunosuppressive conditions or immunosuppression therapy
4. Active hemorrhage in the wound bed
5. Physician discretion for patients with complex medical conditions or high mortality risks
6. Patients with an active implanted device, such as a pacemaker, defibrillator, or hypoglossal or vagal nerve stimulator
7. Patients requiring a legally authorized representative (LAR) for informed consent

no plan to raw share data