Moberg Flap in the Reconstruction of Allen Type III Thumb Tip Injuries: A Case Report
Year: 2026
Type: article
Study design: Case Report
Abstract: Background: Thumb tip injuries involving soft tissue loss and bone exposure represent a reconstructive challenge due to the need to preserve digital length, restore sensibility, and maintain pinch function. The Moberg flap (bilateral volar neurovascular advancement flap) is a classic reconstructive option that provides sensate glabrous skin and durable coverage for selected distal defects. Case Report: We present the case of a 25-year-old male patient with a transverse right thumb tip injury classified as Allen type III, secondary to an avulsion mechanism, with a 1.5 × 2.0 cm defect and distal bone exposure. Reconstruction was performed using a Moberg flap, achieving complete defect coverage without additional bone shortening. Postoperative management included early mobilization and a progressive rehabilitation protocol. Results: The flap demonstrated complete survival with adequate preservation of digital length and favorable clinical evolution. Follow-up revealed recovery of sensibility, preserved joint mobility, and progressive functional reintegration, with no evidence of necrosis, significant joint stiffness, or major complications. Conclusion: The Moberg flap remains a reliable and effective reconstructive technique for Allen type III thumb tip injuries with bone exposure. Proper indication and meticulous surgical execution allow for satisfactory functional outcomes, reinforcing its role as a first-line option for distal thumb reconstruction.
Authors: Gabriel Alcalá-Soto, Luis Enrique Hernández-Alcalá, Yuliet Guadalupe Sánchez-Javier, Rafael Mendez-Reynoza, Irad Antonio Zúñiga-Salazar, General Surgery Resident, Hospital General Regional No. 251 IMSS, Jose Alfonso Simental-Andrade, Miguel Ángel Zozaya-Niño, Kevin Adrian Tinajero-Camacho, Andrea Alvarado-Herrera, Alejandro Herbert Oliva-Arvizu
Language: English
Subfield: Surgery
Field: Medicine
Domain: Health Sciences
Open Access status: hybrid
OpenAlex ID: W7128766640
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