The Stryker Anchorage 2 CP System is intended for use in internal fixation, reconstruction and treatment of fractures in the foot and ankle in adult and adolescent (12-21 years) patients. Indications include: Replantation Joint fusions Corrective osteotomies Osteopenic bone
Device Story
Internal fixation system for foot and ankle fractures; consists of metallic bone plates and compatible screws. Plates feature countersunk interface for inter-fragmentary partially threaded Cross-Plate (CP) lag screws (Ø3.6mm and Ø4.1mm). System also compatible with existing VariAx 2 System screws. Includes surgical accessories: CP reamer, CP drill guides, and CP templates. Used by orthopedic surgeons in clinical settings to stabilize bone segments during reconstruction or fracture repair. Provides mechanical fixation to facilitate bone healing; benefits patient through structural support of osteotomies or fractures.
Clinical Evidence
No clinical data. Substantial equivalence supported by bench testing including construct fatigue strength (ASTM F382-14), insertion torque, shear-off, and pull-out testing (ASTM F543-13). Biocompatibility testing performed per ISO 10993-1.
Technological Characteristics
Plates: Commercially pure Titanium (ASTM F67). Screws: Titanium alloy Ti6Al4V-ELI (ASTM F136). System includes plates (23-49mm) and CP lag screws (Ø3.6mm/Ø4.1mm). Mechanical fixation via countersunk interface. Sterile and non-sterile options. No software or electronic components.
Indications for Use
Indicated for adult and adolescent (12-21 years) patients requiring internal fixation, reconstruction, or treatment of foot and ankle fractures, including replantation, joint fusions, corrective osteotomies, and osteopenic bone.
Regulatory Classification
Identification
Single/multiple component metallic bone fixation appliances and accessories are devices intended to be implanted consisting of one or more metallic components and their metallic fasteners. The devices contain a plate, a nail/plate combination, or a blade/plate combination that are made of alloys, such as cobalt-chromium-molybdenum, stainless steel, and titanium, that are intended to be held in position with fasteners, such as screws and nails, or bolts, nuts, and washers. These devices are used for fixation of fractures of the proximal or distal end of long bones, such as intracapsular, intertrochanteric, intercervical, supracondylar, or condylar fractures of the femur; for fusion of a joint; or for surgical procedures that involve cutting a bone. The devices may be implanted or attached through the skin so that a pulling force (traction) may be applied to the skeletal system.
{0}------------------------------------------------
Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the perimeter. Inside the circle is a stylized image of three human profiles facing to the right, overlapping each other to create a sense of depth and connection.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
October 27, 2015
Stryker GmbH Kurdea Lyon Regulatory Affairs Specialist 325 Corporate Drive Mahwah, New Jersey 07423
Re: K151769 Trade/Device Name: Anchorage 2 CP System Regulation Number: 21 CFR 888.3030 Regulation Name: Single/multiple component metallic bone fixation appliances and accessories Regulatory Class: Class II Product Code: HRS, HWC Dated: September 24, 2015 Received: September 25, 2015
Dear Kurdea Lyon:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Parts 801); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set
{1}------------------------------------------------
forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours,
# Mark N. Melkerson -S
Mark N. Melkerson Director Division of Orthopedic Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{2}------------------------------------------------
| | DEPARTMENT OF HEALTH AND HUMAN SERVICES<br>Food and Drug Administration<br><b>Indications for Use</b> | | Form Approved: OMB No. 0910-0120<br>Expiration Date: January 31, 2017<br>See PRA Statement below. |
|-------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--|---------------------------------------------------------------------------------------------------|
| 510(k) Number (if known) | K151769 (page 1 of 1) | | |
| Device Name | Anchorage 2 CP System | | |
| Indications for Use (Describe) | The Stryker Anchorage 2 CP System is intended for use in internal fixation, reconstruction and treatment of fractures in the foot and ankle in adult and adolescent (12-21 years) patients. | | |
| Indications include: | <ul><li>Replantation</li><li>Joint fusions</li><li>Corrective osteotomies</li><li>Osteopenic bone</li></ul> | | |
| Type of Use (Select one or both, as applicable) | <div> <input checked="true" type="checkbox"/> Prescription Use (Part 21 CFR 801 Subpart D) </div> <div> <input type="checkbox"/> Over-The-Counter Use (21 CFR 801 Subpart C) </div> | | |
PLEASE DO NOT WRITE BELOW THIS LINE – CONTINUE ON A SEPARATE PAGE IF NEEDED.
FOR FDA USE ONLY
Concurrence of Center for Devices and Radiological Health (CDRH) (Signature)
This section applies only to requirements of the Paperwork Reduction Act of 1995.
***DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.***
The burden time for this collection of information is estimated to average 79 hours per response, including the
time to review instructions, search existing data sources, gather and maintain the data needed and complete
and review the collection of information. Send comments regarding this burden estimate or any other aspect
of this information collection, including suggestions for reducing this burden, to:
Department of Health and Human Services
Food and Drug Administration
Office of Chief Information Officer
Paperwork Reduction Act (PRA) Staff
PRAStaff@fda.hhs.gov
"An agency may not conduct or sponsor, and a person is not required to respond to, a collection of
information unless it displays a currently valid OMB number."
| FORM FDA 3881 (1/14) | Page 1 of 1 | PSC Publishing Services (301) 443-6740 | EF |
|----------------------|-------------|----------------------------------------|----|
|----------------------|-------------|----------------------------------------|----|
{3}------------------------------------------------
| | 510(k) Summary |
|-------------------------------------|-------------------------------------------------------------------------------------------------|
| Submitter: | Stryker GmbH<br>Bohnackerweg 1<br>2545 Selzach<br>Switzerland |
| Contact Person: | Kurdea Lyon<br>Regulatory Affairs Specialist<br>Phone: (201) 831-5996<br>Fax: (201) 831-3461 |
| Name of Device: | Anchorage 2 CP System |
| Common Name: | Bone Plates<br>Bone Screws |
| Classification Name: | Single/multiple component metallic bone fixation<br>appliances and accessories 21 CFR §888.3030 |
| | Smooth or threaded metallic bone fixation fastener<br>21 CFR §888.3040 |
| Regulatory Class:<br>Product Codes: | Class II<br>HRS: Plate, Fixation, Bone<br>HWC: Screw, Fixation, Bone |
| Predicate Devices: | Stryker Foot Plating System- K063875<br>VariAx 2 System- K141992 |
| Reference device: | VariAx 2 System (partially threaded Ø2.7mm<br>VariAx 2 screw) - K132502 |
| Date Prepared: | June 29, 2015 |
#### Device Description
This Traditional 510(k) submission is being supplied to the U.S. FDA to seek clearance to market the new Anchorage 2 CP System. The Anchorage 2 CP System is an internal fixation device that consists of various plates used with compatible screws to treat different types of corrective osteotomies and fractures in the foot and ankle. The subject plates comprise of a new countersunk screw interface that is only compatible with the new inter-fragmentary partially threaded Cross-Plate (CP) lag screws. The subject components will be available sterile and non
{4}------------------------------------------------
sterile. The plates will be available in sizes ranging from 23-49mm in length. The Anchorage 2 CP System is introducing Ø3.6mm and Ø4.1mm inter-fragmentary partially threaded Cross-Plate (CP) lag screws. The Anchorage 2 CP Ø3.6mm CP lag screws will be available in sizes ranging from 20-44mm in length and the Anchorage 2 CP Ø4.1mm CP lag screws will be available in sizes ranging from 20-70mm. The Anchorage 2 CP System includes holes that are only compatible with the existing VariAx 2 System screws that were previously cleared in the VariAx 2 System (K132502).
Apart from the CP Lag screws, the associated accessories include:
- . CP Reamer
- CP Drill Guide for T8 Ø3.6mm CP lag screws .
- CP Drill Guide for T10 Ø4.1mm CP lag screws .
- . CP Templates
## Intended Use
The Stryker Anchorage 2 CP System is intended for use in internal fixation, reconstruction and treatment of fractures in the foot and ankle in adult and adolescent (12-21 years) patients.
### Indications for Use:
The Stryker Anchorage 2 CP System is intended for use in internal fixation, reconstruction and treatment of fractures in the foot and ankle in adult and adolescent (12-21 years) patients.
Indications include:
- . Replantation
- . Joint fusions
- . Corrective osteotomies
- . Osteopenic bone
## Comparison of Technological characteristics with the Predicate Device:
The device comparison showed that the subject device is substantially equivalent in intended use, design and operational principles to the previously cleared Stryker Foot Plating System (K063875) and the VariAx 2 Systems (K141992 and K132502). The subject devices are substantially equivalent to the predicate devices in regards to design, materials, and operational principles for use in internal fixation, reconstruction, and treatment of fractures in the foot and ankle.
{5}------------------------------------------------
#### Performance Data:
#### Non-clinical Testing
Biomechanical testing was performed on the Anchorage 2 CP System components to determine substantial equivalence. Testing demonstrated that the Anchorage 2 CP System is substantially equivalent to the predicate devices currently cleared for marketing.
The following tests were performed:
- Construct Fatigue Strength Testing as per ASTM F382-14 (Plates and CP Screws) .
- . Insertion Torque Testing as per ASTM F543-13 (CP Screws)
- . Shear-off Testing as per ASTM F543-13(CP Screws)
- . Pull-out Testing as per ASTM F543-13(CP Screws)
#### Biocompatibility Testing
The biocompatibility evaluation for the Stryker Anchorage 2 CP System was conducted in accordance with the FDA Blue Book Memorandum #G95-1 "Use of International Standard ISO-10993-1. "Biological Evaluation of Medical Devices – Part 1: Evaluation and Testing within a Risk Management Process" as recognized by FDA. The battery of testing included the following tests:
- Cytotoxicity
- · Sensitization
- · Irritation
The screws are categorized as per EN ISO 10993-1:2009 (E) as "Implant Device" with "Tissue/bone" contact duration > 30 days. The material is Titanium alloy (Ti6Al4V-ELI) as per ASTM F136. The plates are categorized as per EN ISO 10993-1:2009 (E) as "Implant Device" with "Tissue/bone" contact duration > 30 days. The material is commercially pure Ti as per ASTM F67. All Class II instruments are categorized as per EN ISO 10993-1: 2009 (E) as an "instrument" with "Tissue/bone" contact of duration <24 hours.
## Animal Testing
Animal testing was not required for this submission.
## Clinical Testing
Clinical testing was not required for this submission.
{6}------------------------------------------------
#### Conclusion
The subject device has the same intended use and similar technological characteristics as the predicate devices. The non-clinical laboratory data support the safety of the subject Anchorage 2 CP System and demonstrate that the subject device should perform as intended in the specified use conditions. Therefore, the subject Anchorage 2 CP system is substantially equivalent to the predicate devices identified throughout this submission.
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.
Copy this now. It will not be shown again.
Connected apps
Apps you authorized through browser sign-in. Disconnecting revokes their access immediately.
Learn the FDA Browser
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.