Upper extremity replantation: current concepts and patient selection

Area of Science:

• Reconstructive surgery
• Microsurgery
• Trauma surgery

Background:

• Advances in microsurgery and replantation techniques have refined patient selection for upper extremity replantation.
• Established criteria guide surgical decisions, balancing potential benefits against risks.

Observation:

• Contraindications include life-threatening injuries, significant anesthetic risk, pre-existing medical/psychiatric conditions, and prior damage to the amputated part.
• Optimal warm ischemic times are 6-8 hours for extremities and 10-12 hours for digits.
• Single-digit amputations are generally not candidates, except for the thumb to preserve grasp function.

Findings:

• Replantation is feasible for sharp amputations, mild-to-moderate crush injuries, or selected avulsion injuries proximal to the distal interphalangeal (DIP) joint.
• Proper preservation of the amputated part, avoiding dry ice, is critical for successful outcomes.
• The decision hinges on predicting superior functional outcomes compared to prosthetic use.

Implications:

• Refined patient selection optimizes resource allocation in replantation surgery.
• Understanding contraindications and favorable conditions improves surgical success rates.
• This approach aims to maximize functional recovery and quality of life for patients with upper extremity amputations.