FDA-cleared profile

RBknee

Radiobotics ApS

The Radiobotics' Rbknee is a fully -automated image processing software device intended to aid medical professionals in the analysis and reporting of weight-bearing AP/PA unilateral or bilateral, and lateral (LAT) planar images of the knee, acquired with a suspicion of osteoarthritis in the tibiofemoral and/or patellofemoral joints. It should not be used in-lieu of full patient evaluation or solely relied upon to make or confirm a diagnosis. The software is to be used by trained professionals including, but not limited to, radiologists, orthopedics, physicians, and medical technicians.

Evidence status: each field shows source quality, applicability, and review date. Research pending, information not established in reviewed sources, and vendor documentation pending are distinct outcomes.

Clinical fit

What this tool is for

Start with the authorized purpose, then verify how it fits your service line and reading workflow.

Exact purpose
The Radiobotics' Rbknee is a fully -automated image processing software device intended to aid medical professionals in the analysis and reporting of weight-bearing AP/PA unilateral or bilateral, and lateral (LAT) planar images of the knee, acquired with a suspicion of osteoarthritis in the tibiofemoral and/or patellofemoral joints. It should not be used in-lieu of full patient evaluation or solely relied upon to make or confirm a diagnosis. The software is to be used by trained professionals including, but not limited to, radiologists, orthopedics, physicians, and medical technicians.
Public source Exact FDA submission Checked 2026-09-01

Exact-submission indication text from the ACR AI Central model card. FDA labeling remains controlling.

Intended users
Trained professionals including, but not limited to, radiologists, orthopedics, physicians and medical technicians
Public source Exact FDA submission Checked 2026-09-01

Intended-user text reported in the exact-submission ACR model card.

Care setting and population
Research pending
Needs research Exact FDA submission Checked 2026-08-31

Confirm the intended care setting, patient population, and service line.

Workflow role
Detection, localization, or diagnostic support
Public source Exact FDA submission Checked 2026-09-01

Conservative normalization of explicit wording in an exact-submission source.

Required input
XRAY images or data. Inclusion criteria: Computed (CR) or directly digital (DX) radiographic images; standing, fixed-flexion posterior-anterior (PA) and anterior-posterior (AP) radiographs of the knee
Public source Exact FDA submission Checked 2026-09-01

Conservative normalization of explicit wording in an exact-submission source.

Output and human action
1. A visual report with: (a) a copy of regions of interest from the original radiographs with overlays marking the minimum Joint Space Width (JSW); (b) a table with measurement of minimum JSW in millimeters, information on presence or absence of joint space narrowing, osteophytes, and sclerosis based on OARSI gradings, and information on presence or absence of radiographic knee osteoarthritis (OA) based on Kellgren-Lawrence (KL) score. 2. A text report with: (a) a textual summary of the presence or absence of joint space narrowing, osteophytes, and sclerosis based on OARSI gradings (findings), and a textual summary of the presence or absence of radiographic knee OA based on the Kellgren-Lawrence score (impression).
Public source Exact FDA submission Checked 2026-09-01

Clinical output reported in the exact-submission ACR model card.

Limitations
Scanner manufacturers: All
Public source Exact FDA submission Checked 2026-09-01

Limitations and supported-acquisition details reported in the exact-submission ACR model card.

Regulatory identity

FDA record and catalog context

The FDA listing establishes the regulatory identity. It does not by itself establish local workflow fit, pricing, security, or performance in your environment.

FDA submission
K203696
FDA source Exact FDA submission Checked 2026-08-31
Modality
X-ray/Radiography
Public source Exact FDA submission Checked 2026-09-01

Imaging modality reported in the exact-submission ACR AI Central model card.

Anatomy
MSK
Public source Exact FDA submission Checked 2026-09-01

Anatomy normalized from explicit exact-submission ACR model-card wording.

Clearance type
510(k)
FDA source Exact FDA submission Checked 2026-08-31
Decision date
2021-08-27
FDA source Exact FDA submission Checked 2026-08-31
FDA status
FDA-cleared
FDA source Exact FDA submission Checked 2026-08-31

Implementation

Questions for IT, informatics, and operations

Use these fields to structure a vendor demo, security review, and implementation estimate.

Integration
Standards-based DICOM/PACS integration was identified in the FDA submission materials; compatibility with a specific PACS, RIS, EHR, or orchestrator requires confirmation.
Public source Exact FDA submission Checked 2026-08-13

Normalized from the prior exact-submission review. Confirm interface versions and local compatibility during technical evaluation.

Deployment and data flow
On-premise
Public source Exact FDA submission Checked 2026-08-13

Deployment category preserved from the prior exact-submission review; hosting region, data flow, and current commercial configuration still require vendor confirmation.

Security and privacy
Vendor documentation pending
Vendor confirmation Exact FDA submission Checked 2026-08-13

FDA authorization does not establish the current commercial security posture. Request data-flow diagrams, hosting and retention details, access controls, audit logging, attestations, and incident-response documentation.

Training and support
Vendor documentation pending
Vendor confirmation Exact FDA submission Checked 2026-08-13

Training, onboarding, competency, and support commitments are commercial implementation details that require current vendor documentation.

Monitoring and change control
Vendor documentation pending
Vendor confirmation Exact FDA submission Checked 2026-08-13

Local acceptance testing, production monitoring, drift review, update control, and incident escalation require a current vendor and site-specific governance plan.

Supported acquisition environment

Scanner manufacturers: All

exact submission · checked 2026-09-01

Confirm currently supported software versions, protocols, and site-specific acquisition configurations.

Evidence

Performance evidence

Metrics are shown only when they are tied to a source, endpoint, population, and tested product version.

Evidence summary
Study type: Stand-Alone Performance. Cases: 1403. Reference standard: Interpretation by Reviewing Clinician
Public source Exact FDA submission Checked 2026-09-01

Structured study metadata from the exact-submission ACR model card; this is not an independent evidence synthesis.

Reported sensitivity
Research pending
Needs research Exact FDA submission Checked 2026-08-31

This field has not been curated yet.

Reported specificity
Research pending
Needs research Exact FDA submission Checked 2026-08-31

This field has not been curated yet.

No contextualized exact-version metric has completed evidence review. Regulatory-document values, when available, are shown above with their limitations.

Rbknee regulatory performance study summary

Stand-Alone Performance · Population described in the exact-submission ACR model card

exact submission · Tested version: Exact product version not reported; regulatory study summarized for FDA submission K203696 · n=1403 · Independence not established

K203696

ACR AI Central summarizes the regulatory study; consult the exact FDA materials before comparative use.

Economics and lifecycle

Budget and ongoing governance

These are common procurement questions; unknown values remain visible until a source supports them.

Pricing and total cost
Vendor documentation pending
Vendor confirmation Exact FDA submission Checked 2026-08-13

FDA submission materials do not establish current commercial pricing. Request the pricing unit, term, minimum commitment, implementation fees, and included support from the vendor.

Reimbursement and coding
Research pending
Needs research Exact FDA submission Checked 2026-08-31

Determine whether any product-specific CPT/HCPCS pathway exists and separate it from billing for the underlying imaging service.

Safety and lifecycle

Postmarket record

Recall and adverse-event records are shown only after product matching. Adverse-event reports do not establish incidence or causality.

Postmarket safety review
Not established in reviewed sources
Reviewed sources checked Exact FDA submission Checked 2026-09-04

No native submission-identifier match was found in the checked openFDA radiology recall snapshot. Product-name, manufacturer, and adverse-event searches remain necessary; this does not establish that no recall or safety report exists.

Buyer worksheet

Open questions to take to the vendor

Open evaluation checklist

Research record

What has been checked

This audit distinguishes completed source review from fields that have not yet been researched.

Exact FDA record reviewedStatus
2026-09-04Last searched
17Fields reviewed
6Source classes checked
0Unreviewed PubMed leads
0Unreviewed trial leads
0Unreviewed FDA recall leads

Exact-submission ACR model-card fields were normalized under the current provenance rules; vendor and independent-study confirmation remain distinct. Automated exact-name discovery found 0 PubMed and 0 ClinicalTrials.gov candidate records. Candidates require human product and version matching; zero candidates is not evidence that no studies exist. Native FDA recall identifiers produced 0 postmarket candidate records; 0 have been reviewed (0 published, 0 rejected) and 0 remain unreviewed.

Candidate leads remain unpublished until a human confirms the exact product and tested version.

Source classes: fda ai list, fda decision summary, acr ai central product, pubmed, clinical trials, openfda device recall

Sources

Source ledger

Sources accessed through 2026-09-02.

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