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Updated: May 22, 2026

Vascularized Composite Upper Limb Allograft Harvesting for Proximal Arm Allotransplantation
Published on: June 13, 2025
Vascularized composite allotransplantation: a member of the transplant family?
Stefan Schneeberger1, Emmanuel Morelon, Luis Landin
1Center for Operative Medicine, Department of Visceral, Transplant and Thoracic Surgery, Innsbruck Medical University, Innsbruck, Austria. stefan.schneeberger@i-med.ac.at
Insights
Vascularized composite allograft (VCA) definitions and allocation require specific considerations beyond solid organ transplants. This article addresses key aspects for developing a VCA allocation scheme, including donor factors and surgical procedures.
Area of Science:
- Regenerative Medicine
- Transplantation Immunology
- Surgical Innovation
Background:
- Vascularized composite allografts (VCAs) represent a complex frontier in transplantation.
- Current transplantation frameworks do not fully encompass the unique challenges of VCA donation and allocation.
- Standardization in VCA terminology and procedures is lacking.
Purpose of the Study:
- To highlight the need for refined definitions and nomenclature for VCAs.
- To identify critical factors for developing a comprehensive VCA allocation system.
- To outline essential considerations for VCA donor operations and organ retrieval.
Main Methods:
- Literature review and analysis of current transplantation protocols.
- Comparative analysis of solid organ transplantation versus VCA requirements.
- Discussion of ethical and logistical considerations in VCA allocation.
Main Results:
- VCA allocation necessitates unique criteria, including donor identification, race, and bone constitution.
- Specific algorithms are required for the surgical sequence during VCA donor retrieval.
- Existing allocation schemes need adaptation to incorporate VCA-specific elements.
Conclusions:
- Further interaction with regulatory bodies is crucial for VCA definition and nomenclature.
- A tailored VCA allocation scheme is essential for successful transplantation.
- Addressing donor-related factors and surgical protocols will advance VCA transplantation.
Abstract:
The definition of vascularized composite allograft (VCA) and the nomenclature require further attention and interaction with the competent authorities. When compared with solid organ transplantation, VCA donation and allocation imply additional elements such as donor identification, race, and bone constitution, which need to be worked into a scheme for VCA allocation. Furthermore, retrieval of limbs, faces, and possibly other body parts demands algorithms for the sequence of steps during the donor operation. Relevant aspects and criteria for any VCA allocation concept are addressed in this article.
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09:09A Modified Heterotopic Swine Hind Limb Transplant Model for Translational Vascularized Composite Allotransplantation (VCA) Research
Published on: October 14, 2013
10:31Surgical Angiogenesis in Porcine Tibial Allotransplantation: A New Large Animal Bone Vascularized Composite Allotransplantation Model
Published on: August 13, 2017
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