If a finger or toe is severed, compress the wound to stop bleeding, wrap the amputated part in damp sterile gauze inside a sealed plastic bag immersed in ice water, and transport immediately to a specialized hand surgery hospital

First apply direct firm pressure to the stump wound to halt bleeding and call emergency services. Wrap the severed digit in clean damp gauze, place it into a waterproof sealed plastic bag, and submerge the sealed bag in an ice-water slurry. Never let the severed digit touch ice directly and never immerse it unbagged in liquid. Without cold preservation, warm ischemia limits replantation viability to roughly 4 to 6 hours. With proper preservation, over 80% of replanted digits survive.

Zero financial cost for emergency preservation; emergency microvascular replantation and hospital treatment incur specialized surgical costs. Maintain sterile gauze and zip-top plastic bags in household first-aid kits. The psychological challenge is prioritizing patient hemostasis over the detached digit, and refraining from placing the severed part directly into water or bare ice.

MedlinePlus emergency protocols instruct: apply direct manual pressure to the amputation site to arrest hemorrhage and elevate the injured extremity; apply a tourniquet only for life-threatening arterial bleeding unresponsive to direct pressure. Recover and preserve every severed anatomical fragment to accompany the patient. If contaminated, rinse the severed part gently. Wrap the severed digit in a clean damp cloth or sterile saline gauze, seal it inside a waterproof plastic bag, and submerge the sealed bag in an ice-water bath. Crucial contraindications: (1) never submerge the body part directly in water or ice without a sealed bag; (2) never place severed tissue directly in contact with ice cubes; (3) never use dry ice, which causes irreversible frostbite cryo-necrosis; and (4) in the absence of ice, keep the part as cool as possible and insulated from ambient heat. Cold ischemia dramatically extends tissue viability; uncooled amputated digits tolerate warm ischemia for only approximately 4 to 6 hours before microvascular thrombi and muscle necrosis prevent successful revascularization. Never assume an amputated fragment is too mangled or small to salvage, and never attempt to shove protruding bone back into the stump. American Academy of Orthopaedic Surgeons (AAOS) guidelines emphasize prompt transit to trauma centers with 24/7 on-call microvascular hand surgery capabilities. A 2024 systematic review of 31 clinical studies evaluating 2,276 digits demonstrated an overall replantation survival rate of 86.8% (1,976 successful salvages vs. 300 failures); among 1,087 patients undergoing replantation, 82.9% successfully returned to employment. A meta-analysis of 12 studies reported an 85.3% digit survival rate. Another meta-analysis across 12 studies and 3,645 patients identified total ischemic time >=8 hours as a critical risk factor for postoperative microvascular necrosis, with odds of replantation failure 2.25 times higher (OR 2.25, 95% CI: 1.43–3.54).

Graded Evidence Grade B because preservation standards reflect international emergency surgery guidelines and observational surgical cohort registries rather than randomized controlled trials. Benefit magnitude is categorized as Moderate: intervention salvages functional limbs rather than saving life. Replantation feasibility is determined by surgical teams based on injury morphology; clean guillotine cuts carry vastly higher replantation success than severe crush or avulsion injuries. Saving life always precedes saving limbs: secure hemostasis on the stump before packaging severed tissue. For tourniquet application under uncontrolled hemorrhage, see Chapter 13, Rule 12. Angle grinder safety guards to prevent traumatic hand amputations are detailed in Chapter 1, Rule 42. Primary beneficiaries are manual laborers, machine operators, and household cooks.

MedlinePlus (2024). Traumatic amputation：「Wrap the severed part in a clean, damp cloth, place it in a sealed plastic bag and place the bag in an ice water bath」「Do not put the body part directly in water or ice without using a plastic bag」「Do not put the severed part directly on ice」「Without cooling, the severed part is only good for reattachment for about 4 to 6 hours」. https://medlineplus.gov/ency/article/000006.htm；American Academy of Orthopaedic Surgeons. Fingertip Injuries and Amputations：「Do not allow the amputated part to be in direct contact with ice」「Go immediately to the emergency room, preferably at a hospital that has hand specialists immediately available」. https://orthoinfo.aaos.org/en/diseases--conditions/fingertip-injuries-and-amputations；Treger D 等 (2026). Return-to-Work After Attempted Digit Replantation: A Systematic Review of 31 Studies. HAND. https://doi.org/10.1177/15589447241279445；Stone N 等 (2021). Comparing digital replantation versus revision amputation patient reported outcomes for traumatic digital amputations of the hand: A systematic review and meta-analysis. Microsurgery. https://doi.org/10.1002/micr.30738；Yu F 等 (2026). Risk factors associated with postoperative necrosis after digital replantation: a systematic review and meta-analysis. Frontiers in Surgery. https://doi.org/10.3389/fsurg.2026.1795247