Xenograft
Pronunciation: ZEE-noh-graft
A bone-grafting material derived from a non-human species, most commonly bovine or porcine bone, used to fill osseous defects. Editors must distinguish it from allograft, autograft, and alloplast.
Full Definition
A xenograft is a bone substitute harvested from a different species than the recipient, typically bovine (e.g., Bio-Oss®) or porcine origin, processed to remove organic components while preserving the hydroxyapatite scaffold. In periodontal and implant contexts, xenografts serve as osteoconductive scaffolds that support new bone formation. Editors reviewing materials-and-methods sections must ensure the graft type is accurately labeled: autograft (patient's own bone), allograft (human donor bone), xenograft (animal source), or alloplast (synthetic). Failure to distinguish these terms constitutes a clinical and regulatory inaccuracy. The spelling is one unhyphenated word; 'xeno-graft' is non-standard.
Usage
Usage note: One unhyphenated word. Confirm source species (bovine/porcine) is stated in methods sections. Do not conflate with 'allograft' (human donor) or 'autograft' (self-donated).
In Context
- "The intrabony defect was filled with deproteinised bovine xenograft particulate and covered with a resorbable collagen membrane." — Periodontal regenerative surgery report
- "Editors must ensure that xenograft, allograft, and autograft are not used interchangeably in grafting manuscripts." — Editorial style guide note