VARI AX DISTAL RADIUS LINE EXTENSIONS OF XXL PLATES
Applicant
Howmedica Osteonics Corp.
Product Code
HRS · Orthopedic
Decision Date
May 14, 2010
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 888.3030
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Stryker® XXL Volar Distal Radius Plates are intended for use for internal fixation for fractures and reconstruction of small bones, primarily including the distal radius. Examples of these internal fixations and reconstructions include compression fractures, intra-articular and extra-articular fractures, displaced fractures, osteotomies, non-unions and mal-unions. This system can be used for palmar, dorsal or orthogonal application.
Device Story
System consists of XXL-sized pre-contoured metallic bone plates and associated screws/pegs for internal fixation of distal radius fractures and reconstructions. Plates feature 5, 8, 11, or 15 hole options with 2mm distal and 3mm shaft profile heights; designed for palmar, dorsal, or orthogonal application. Screws are self-tapping with cross-pin or torx heads. Device used by orthopedic surgeons in clinical/surgical settings to stabilize bone segments; facilitates bone healing via rigid fixation. Output is physical stabilization of bone; clinical decision-making relies on surgeon assessment of fracture type and anatomical fit. Benefits include restoration of bone alignment and structural integrity.
Clinical Evidence
Bench testing only.
Technological Characteristics
Metallic bone fixation plates and screws. Features pre-contoured geometry for radial bow, 2mm distal profile, 3mm shaft profile, and gliding holes for alignment. Includes locking screws, bone screws, locking pegs, and partially threaded screws with self-tapping capability. Torx or cross-pin head configurations.
Indications for Use
Indicated for internal fixation of fractures and reconstruction of small bones, primarily the distal radius, in patients requiring treatment for compression, intra-articular, extra-articular, or displaced fractures, as well as osteotomies, non-unions, and mal-unions.
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.
Predicate Devices
Stryker Leibinger Universal Distal Radius System (K040022)
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K100271 (1/2)
# MAY 1 4 2010
# 510(k) Summary of Safety and Effectiveness
| Proprietary Name: | VariAx Distal Radius Line Extension of XXL Plates |
|------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Common Name: | Bone plates and screws |
| Classification Name and Reference: | Single/multiple component metallic bone fixation appliances and accessories 21 CFR §888.3030 |
| Regulatory Class: | Class II |
| Product Codes: | HRS: Plate, Fixation, Bone |
| For Information contact: | Melissa Matarese, Regulatory Affairs Associate<br>Howmedica Osteonics Corp.<br>325 Corporate Drive<br>Mahwah, NJ 07430<br>Phone: (201) 831-5116 Fax: (201) 831-4116 |
| Date Prepared: | October 20, 2009 |
# Description:
Homedica Osteonics is extending the Variax Distal Radius Plates of the Variax Distal Radius Plating System to include XXL sized plates as well as to modify the indications for use for the XXL Volar Distal Radius Plates to include Osteotomies, non-unions and mal-unions.
Each plate will accept a locking screw, bone screws, locking pegs, and partially threaded screws. The XXL plates are precontoured performed for palmer, fixation. Screws are selftapping and have either cross-pin or torx heads.
Plates are offerered in 5,8,11,and 15 hole options with a 2mm distal profile height and 3mm profile shaft height. All plates are straight and pre-contoured to fit the radial bow beyond the shaft. Gliding holes all for allignment of the plate and allow for additional bone reduction if required.
# Intended Use:
The Stryker® XXL Volar Distal Radius Plates are intended for use for internal fixation for fractures and reconstruction of small bones, primarily including the distal radius. Examples of these internal fixations and reconstructions include compression fractures, intra-articular and
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extra-articular fractures, displaced fractures, osteotomies, non-unions and mal-unions. This system can be used for palmar, dorsal or orthogonal application.
# Indications:
The indications for use of The Stryker® XXL Volar Distal Radius Plates include:
The Stryker® XXL Volar Distal Radius Plates are intended for use for internal fixation for fractures and reconstruction of the small bones, primarily including the distal radius. Examples of these internal fixations and reconstructions include compression fractures, intra-articular and extra-articular fractures, displaced fractures, osteotomies, non-unions and mal-unions. This system can be used for palmar, dorsal or orthogonal application.
#### Substantial Equivalence:
The VariAx Distal Radius Line Extension of XXL Plates is substantially equivalent to other commercially available plate systems in regard to intended use, design materials and operational The following devices are examples of predicate systems: Stryker Leibinger principles. Universal Distal Radius System (K040022) which is marketed under the name of VariAx Distal Radius System, Synthes Diaphyseal-Metaphyseal Volar Distal Radius Plate (K070946), and Zimmer Periarticular Locking Plate System (K040593). Based upon the mechanical testing, the VariAx Distal Radius Line Extension of XXL Plates is substantially equivalent for its intended use to other plating systems currently on the market. Also, the Distal Radius Torx Screws are compatible with this system (K080667).
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Image /page/2/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized depiction of an eagle or bird-like figure with three wing-like shapes. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular fashion around the bird-like figure. The text is in all capital letters.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
MAY 1 4 2010
Howmedica Osteonics Corporation % Ms. Melissa Matarese Regulatory Affairs Associate 325 Corporate Drive Mahwah, New-Jersey-07430
Re: K100271
Trade/Device Name: VariAX Distal Radius Line Extension of XXL Plates Regulation Number: 21 CFR 888.3030 Regulation Name: Single/multiple component metallic bone fixation appliances and accessories Regulatory Class: II Product Code: HRS Dated: April 29, 2010 Received: April 30, 2010
Dear Ms. Matarese:
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. Iisting 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 Part 801); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set
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Page 2 - Ms. Melissa Matarese
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 go to http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. 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 Small Manufacturers, International and Consumer Assistance 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.
Sincerely vours.
Mark M. Millers
Mark N. Melkerson Director Division of Surgical, Orthopedic, and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Indications for Use
510(k) Number (if known): | | 0027 |
Device Name: VariAx Distal Radius Line Extension of XXL Plates
Indications for Use:
The indications for use of the Distal Radius System:
The Stryker® XXL Volar Distal Radius Plates are intended for use for internal fixation for fractures and reconstruction of the small bones, primarily including the distal radius. Examples of these internal fixations and reconstructions include compression fractures, intra-articular and extra-articular fractures, displaced fractures, osteotomies, non-unions and mal-unions. This system can be used for palmar, dorsal or orthogonal application.
Over-The-Counter Prescription . Use X Use - AND/OR (21 CFR 807 Subpart C) (Part 21 CFR 801 Subpart D) (PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE OF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Ooutu of mxa
(Division Sign-Off) Division of Surgical, Orthopedic, and Restorative Devices
510(k) Number K100271
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.
