{
  "id": 9452200,
  "title": "XWRAP Human Amniotic Membrane in Combination with an Amniotic-Fluid-Derived Biologic Promotes Collagen Fibril Regeneration in a Preclinical Rabbit Model of Medial Collateral Ligament Injury",
  "url": "https://urgent.news/2026/09/23/xwrap-human-amniotic-membrane-in-combination-with-an-amniotic-fluid",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-23T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.09.18.752432v1?rss=1"
  },
  "original_language": "en",
  "account": "Orthopedic ligament injuries are often treated with non-regenerative materials and surgical repair methods, rather than strategies that encourage natural tissue regeneration. A recent study investigated the potential of combining XWRAP, a human amniotic membrane allograft, with a cryopreserved amniotic-fluid-derived biologic containing micronized human amnion membrane to promote ligament architecture regeneration in a preclinical rabbit model of medial collateral ligament (MCL) gap-defect injury.\n\nFour millimeter mid-substance MCL gap defects were meticulously created in New Zealand White rabbits, with three rabbits in each treatment group. One group was treated with the amniotic membrane/amniotic-fluid biologic combination, while the other group served as native controls with intact contralateral or adjacent MCL. The ligaments were assessed using transmission electron microscopy at 2 and 6 weeks post-procedure, with collagen fibril diameter being the key measurement taken from calibrated high-magnification micrographs.\n\nThe study found that the treated defects exhibited significantly larger mean collagen fibril diameters compared to the untreated defects at both 2 and 6 weeks post-procedure. Specifically, at 2 weeks, the treated defects had a mean collagen fibril diameter of 75 nm, in contrast to the untreated defects with a mean diameter of 50 nm (p < 0.05). Similarly, at 6 weeks, the treated defects displayed a mean collagen fibril diameter of 88 nm, compared to the untreated defects with a mean diameter of 62 nm (p < 0.05).",
  "summary": "Current treatment of orthopedic ligament injury relies principally on non-regenerative materials and surgical repair rather than strategies that promote intrinsic tissue regeneration. This study evaluated whether biologic augmentation with XWRAP, a human amniotic membrane allograft, combined with a cryopreserved amniotic-fluid-derived biologic containing micronized human amnion membrane, promotes…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}