What changed—and why.

Independent re-audit and methods release

• Updated Acorn 3D to latest family record K260322 and retained K252103 as predecessor evidence.
• Separated current UNiD v5.1 evidence from the 1,050-case validation reported for predecessor v5.0.
• Corrected SpineAR sacral metric labels to match the FDA table.
• Changed ScanDiags literature matching to Partial because the evaluated commercial version was not reported.
• Updated xvision to latest record K261854 and added CoLumbo C-Spine to the AI-ambiguity watchlist.
• Added CoLumbo and BoneMRI evidence, explicit trial statuses, source-specific version caveats, and smaller wording corrections.
• Published the full search, matching, staging, independence, safety, and corrections methods.

No evidence-stage changes were made in this release.

Public beta

Expanded the spine index to 17 curated platform families, added a vertical evidence-stage ladder, a verification watchlist, source links, an editor page, and the clearancetoclinic.com domain.

Initial prototype

Established the clearance-to-evidence concept, spine-first scope, and initial FDA-to-clinical-evidence device cards.