The Osteonics® Anteverted Neck HA Hip Stems are intended for single use in patients requiring either bipolar, hemi- or total hip replacement. The Osteonics® Anteverted Neck HA Hip Stems are intended to be implanted in a cementless application. The indications for the use of the Osteonics® Anteverted Neck HA Hip Stem, in keeping with those of other legally marketed Class II hip stems, are as follows: For use as a Bipolar/Hemi- Hip Replacement: - Femoral head/neck fractures or non-unions. - Aseptic necrosis of the femoral head. - Osteo-, rheumatoid, and post-traumatic arthritis of the hip with minimal acetabular involvement or distortion. Other Considerations: - Pathological conditions or age considerations which indicate a more conservative acetabular procedure and an avoidance of the use of bone cement in the acetabulum. For use as a Total Hip Replacement: - Painful, disabling joint disease of the hip resulting from: degenerative arthritis, rheumatoid arthritis, post-traumatic arthritis or late stage avascular necrosis. - Revision of previous unsuccessful femoral head replacement, cup arthroplasty or other procedure. - Clinical management problems where arthrodesis or alternative reconstructive techniques are less likely to achieve satisfactory results.
Device Story
Femoral hip prosthesis for cementless implantation; fabricated from forged Titanium 6Al-4V ELI alloy; proximal third coated with arc-deposited commercially pure (CP) Titanium; full-length Hydroxyapatite (HA) coating. Features include 15° anteverted neck angle, Osteonics C-Taper trunnion, and proportional stem sizes. Used by orthopedic surgeons in clinical settings for hip replacement procedures. Device provides mechanical support for hip joint; output is physical structural replacement of femoral head/neck. Benefits include restoration of joint function and pain relief in patients with degenerative or traumatic hip disease. FDA limits claims to mechanical interlock; prohibits claims of biological attachment or enhanced fixation.
Clinical Evidence
Bench testing only; no clinical data provided. Equivalence established through design comparison and performance testing demonstrating no significant differences from predicate devices.
Indicated for patients requiring bipolar, hemi-, or total hip replacement due to femoral head/neck fractures, non-unions, aseptic necrosis, or arthritis (osteo-, rheumatoid, post-traumatic). Also indicated for revision of previous hip procedures or clinical management problems where arthrodesis is less favorable. Applicable to patients requiring conservative acetabular procedures or avoidance of bone cement.
Regulatory Classification
Identification
A hip joint metal/ceramic/polymer semi-constrained cemented or nonporous uncemented prosthesis is a device intended to be implanted to replace a hip joint. This device limits translation and rotation in one or more planes via the geometry of its articulating surfaces. It has no linkage across-the-joint. The two-part femoral component consists of a femoral stem made of alloys to be fixed in the intramedullary canal of the femur by impaction with or without use of bone cement. The proximal end of the femoral stem is tapered with a surface that ensures positive locking with the spherical ceramic (aluminium oxide, A12 03 ) head of the femoral component. The acetabular component is made of ultra-high molecular weight polyethylene or ultra-high molecular weight polyethylene reinforced with nonporous metal alloys, and used with or without bone cement.
Predicate Devices
Osteonics® Anteverted Neck Hip Stems
Osteonics® Secur-Fit HA Plus Hip Stem Series
Submission Summary (Full Text)
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MAY 2 7 1998
Osteonics" Anteverted Neck HA Hip Stems
# 510(K) PREMARKET NOTIFICATION SUMMARY OF SAFETY AND EFFECTIVENESS OSTEONICS® ANTEVERTED NECK HA HIP STEMS
# Submission Information Name and Address of the Sponsor of the 510(k) Submission:
Contact Person:
Date Summary Prepared:
Device Identification Proprietary Name:
Common Name:
Classification Name and Reference:
Osteonics Corporation 59 Route 17 Allendale, NJ 07401-1677 201-825-4900
Donna S. Wilson Regulatory Affairs Specialist
February 27, 1998
Osteonics® Anteverted Neck HA Hip Stems
Hip Prosthesis
Hip Joint. Metal/Ceramic/Polymer, Semi-Constrained, Cemented or Non-Porous Uncemented Prosthesis; 21 CFR §888.3353
#### Predicate Device Identification
The Osteonics® Anteverted Neck HA Hip Stems are substantially equivalent to the Osteonics® Anteverted Neck Hip Stems and the Osteonics® Secur-Fit HA Plus Hip Stem Series.
### Device Description
The Osteonics® Anteverted Neck HA Hip Stems are fabricated from forged Titanium 6AI-4V ELI alloy and have a surface coating of arc deposited commercially pure (CP) Titanium on the proximal third of the femoral stem, and an HA coating on the full length of the stem. The basic design characteristics of the Osteonics® Anteverted Neck HA Hip Stems include proportional stem sizes, maximized projected proximal area, proximal anterior and posterior normalizations, Osteonics® C-Taper trunnion, reduced anterior/posterior collar, rounded configuration for the length of the stem's lateral aspect, cylindrical distal cross-section, left and right configurations, and 15° anteverted neck angle.
#### Intended Use
The Osteonics® Anteverted Neck HA Hip Stem is intended for single use in patients requiring either bipolar, hemi- or total hip replacement. The Osteonics® Anteverted Neck HA Hip Stem is intended
K980766 510(k) Premarket Notification
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#### 510(k) Premarket Notification
#### Osteonics" Anteverted Neck HA Hip Stems
to be implanted in a cementless application. The indications for the use of the Osteonics® Anteverted Neck HA Hip Stem, in keeping with those of other legally marketed Class II hip stems, are as follows:
- For use as a Bipolar/Hemi- Hip Replacement:
- Femoral head/neck fractures or non-unions. .
- Aseptic necrosis of the femoral head. .
- Osteo-, rheumatoid, and post-traumatic arthritis of the hip with minimal acetabular . involvement or distortion.
Other Considerations:
- Pathological conditions or age considerations which indicate a more conservative . acetabular procedure and an avoidance of the use of bone cement in the acetabulum.
#### For use as a Total Hip Replacement:
- Painful, disabling joint disease of the hip resulting from: degenerative arthritis, . rheumatoid arthritis, post-traumatic arthritis or late stage avascular necrosis.
- Revision of previous unsuccessful femoral head replacement, cup arthroplasty or . other procedure.
- Clinical management problems where arthrodesis or alternative reconstructive . techniques are less likely to achieve satisfactory results.
### Statement of Technological Comparison
The Osteonics® Anteverted Neck HA Hip Stems share the same materials, indications and intended use, surgical techniques, basic design features, and basic manufacturing methods of their predicate devices. Applicable performance testing demonstrates that no significant difference exists between these components and their predicate designs.
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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 eagle-like symbol with three horizontal lines extending from its body. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular fashion around the symbol.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
MAY 27 1998
Ms. Elizabeth A. Staub Director Quality Assurance and Regulatory Affairs Osteonics Corporation 59 Route 17 Allendale, New Jersey 07401-1677
Re : K980766 Anteverted Neck HA Hip Stem Trade Name: Requlatory Class: II Product Code: MEH Dated: February 27, 1998 February 27, 1998 Received:
Dear Ms. Staub:
We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to 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). This decision is based on consideration of the specific design of stem and coating composition detailed in this application. You may, therefore, market the device, subject to the general controls provisions of the Act and the following limitation:
You may not label or in any way promote these devices for "biological attachment, enhanced clinical or radiographic performance, enhanced fixation and/or long-term stable The data presented support equivalence with fixation." no additional claims over a conventional press-fit hip prosthesis (i.e., mechanical interlock, only).
Additional limitations for more specific claims of safety and effectiveness may be forthcoming. Should additional limitations be applied you will be contacted in writing to inform you of the additional labeling limitations.
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.
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Page 2 - Ms. Elizabeth A. Staub
You may market your device under the above limitations as class II devices. These devices would be considered not substantially equivalent to a legally marketed predicate device if labeled with other intended uses and/or claims of safety or effectiveness. Any other intended uses or claims may cause the device to be classified into Class III under Section 513 (f) of the Act. Class III devices are required to have an approved premarket approval (PMA) application prior to marketing.
Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to A substantially equivalent determination assumes 895. compliance with the current Good Manufacturing Practice requirement, as set forth in the Quality System Regulation General regulation (21 CFR Part (QS) for Medical Devices: 820) and that, through periodic (QS) inspections, the Food and Drug Administration (FDA) will verify such assumptions. In addition, FDA may publish further announcements concerning this your device in the Federal Register. Please note: response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal Laws or Regulations.
This letter will allow you to begin marketing your device as described in your 510(k) premarket notification immediately. An FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and permits your device to proceed to the market.
If you desire specific advice for your device on our labeling requlation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4659. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). Other general information on your responsibilities under the Act may be
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Page 3 - Ms. Elizabeth A. Staub
obtained from the Division of Small Manufacturers Assistance Obtained from the Bivibion of 638-2041 or (301) 443-6597 or at its Internet address "http://www.fda.gov/cdrh/dsmamain.html".
Sincerely yours,
G. Celia M. Witten, Ph.D., M
Ph.D., M.D. Celia M. Witten, Director Division of General and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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### 510(k) Number (if known): K980766
## Device Name: Osteonics® Anteverted Neck HA Hip Stems
#### Indications For Use:
The Osteonics® Anteverted Neck HA Hip Stems are intended for single use in patients requiring either bipolar, hemior total hip replacement. The Osteonics® Anteverted Neck HA Hip Stems are intended to be implanted in a cementless application. These devices feature an Osteonics® C-Taper trunnion, and are therefore compatible with any Osteonics® component which features the mating Osteonics® C-Taper geometry. The Osteonics® Anteverted Neck HA Hip Stems, when used with any commercially available Osteonics® C-Taper femoral bearing head, may be used with any commercially available Osteonics® acetabular component. The use of the Osteonics® Anteverted Neck HA Hip Stems, in keeping with those of other legally marketed Class II hip stems, are as follows:
For use as a Bipolar/Hemi- Hip Replacement:
- Femoral head/neck fractures or non-unions. .
- Aseptic necrosis of the femoral head. #
- Osteo-, rheumatoid, and post-traumatic arthritis of the hip with minimal acetabular involvement or . distortion.
Other Considerations:
- Pathological conditions or age considerations which indicate a more conservative acetabular . procedure and an avoidance of the use of bone cement in the acetabulum.
- For use as a Total Hip Replacement:
- Painful, disabling joint disease of the hip resulting from: degenerative arthritis, rheumatoid arthritis, . post-traumatic arthritis or late stage avascular necrosis.
- Revision of previous unsuccessful femoral head replacement, cup arthroplasty or other procedure. .
- Clinical management problems where arthrodesis or alternative reconstructive techniques are less likely to achieve satisfactory results.
## (PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Prescription Use (Per 21 CFR 801.109)
OR
Over-The-Counter Use
(Optional Format 1-2-96)
(Division Sign-Off)
of General Restorative Devices 510(k) Number
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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.