SMITH & NEPHEW GENESIS II DEEP FLEXION CRUCIATE RETAINING ARTICULAR INSERT
K041825 · Smith & Nephew, Inc. · JWH · Mar 11, 2005 · Orthopedic
Device Facts
Record ID
K041825
Device Name
SMITH & NEPHEW GENESIS II DEEP FLEXION CRUCIATE RETAINING ARTICULAR INSERT
Applicant
Smith & Nephew, Inc.
Product Code
JWH · Orthopedic
Decision Date
Mar 11, 2005
Decision
SESE
Submission Type
Special
Regulation
21 CFR 888.3560
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Genesis II Deep Flexion Cruciate Retaining Articular Insert is intended to be used in conjunction with the components of the Genesis II Total Knee System. The Genesis II Total Knee System is indicated for rheumatoid arthritis; post-traumatic arthritis, osteoarthritis, or degenerative arthritis in older patients whose age, weight, and activity level are compatible with an adequate long-term result; failed osteotomies, unicompartmental replacement, or total knee replacement. Posterior stabilized knee systems are designed for use in patients in primary and revision surgery, where the anterior and posterior cruciate ligaments are absent or incompetent and the collateral ligaments remain intact. The Genesis II Deep Flexion Cruciate Retaining Articular Insert is used with existing cemented femoral, tibial tray, and patellar components of the Genesis II Total Knee System cleared via K951987 and K953274. The Genesis II Deep Flexion Cruciate Retaining Articular Insert is for single use only. The Genesis II Deep Flexion Cruciate Retaining Articular Insert is intended to be used in conjunction with the components of the Genesis II Total Knee System. The Genesis II Total Knee System is indicated for rheumatoid arthritis; post-traumatic arthritis, osteoarthritis, or degenerative arthritis in older patients whose age, weight, and activity level are compatible with an adequate long-term result; failed osteotomies, unicompartmental replacement, or total knee replacement. It where the anterior and posterior cruciate ligaments are absent or incompetent and the collateral ligaments remain intact. The Genesis II Deep Flexion Cruciate Retaining Articular Insert is used with existing cemented patellar and uncemented porous tibial trays and femoral components of the Genesis II Total Knee pattern cleared via K030612. The Genesis II Deep Flexion Cruciate Retaining Articular Insert is for single use only.
Device Story
Genesis II Deep Flexion Cruciate Retaining Articular Insert; UHMWPE tibial component; used with Genesis II Total Knee System components (cemented or porous/uncemented). Enables greater flexion range for patients with anatomical capability. Single-use device; implanted by orthopedic surgeons in clinical/hospital settings. Provides articular surface for knee joint; facilitates joint motion; supports long-term knee function. Benefits include improved range of motion for eligible patients.
Clinical Evidence
Bench testing only. Mechanical test data indicates the device is equivalent to currently used clinical devices and capable of withstanding expected in vivo loading without failure.
Technological Characteristics
UHMWPE tibial component; semi-constrained; designed for use with Genesis II Total Knee System femoral, tibial tray, and patellar components. Single-use.
Indications for Use
Indicated for rheumatoid, post-traumatic, or degenerative arthritis in older patients with compatible age, weight, and activity levels; failed osteotomies; unicompartmental or total knee replacement. Posterior stabilized systems indicated for primary/revision surgery where anterior/posterior cruciate ligaments are absent/incompetent and collateral ligaments remain intact.
Regulatory Classification
Identification
A knee joint patellofemorotibial polymer/metal/polymer semi-constrained cemented prosthesis is a device intended to be implanted to replace a knee joint. The device limits translation and rotation in one or more planes via the geometry of its articulating surfaces. It has no linkage across-the-joint. This generic type of device includes prostheses that have a femoral component made of alloys, such as cobalt-chromium-molybdenum, and a tibial component or components and a retropatellar resurfacing component made of ultra-high molecular weight polyethylene. This generic type of device is limited to those prostheses intended for use with bone cement (§ 888.3027).
Genesis II P/S High Flexion Articular Insert (K032295)
Submission Summary (Full Text)
{0}------------------------------------------------
K041825
p. 1/2
## Smith & Nephew, Inc. Summary of Safety and Effectiveness Genesis II Deep Flexion Cruciate Retaining Articular Insert
### Contact Person and Address
Date of Summary: July 6, 2004
Kim Kelly Project Manager, Clinical/Regulatory Affairs Smith & Nephew, Inc. Orthopaedic Division 1450 Brooks Road Memphis, TN 38116 (901) 399-6566
W/R/1 2005
Name of Device: Genesis II Deep Flexion Cruciate Retaining Articular Insert Common Name: Articular insert
### Device Description
The Genesis II Deep Flexion Cruciate Retaining Articular Inserts are UHMWPE tibial components which provide the ability for greater flexion to those patients who have the anatomical capability to allow a greater flexion range. The insert is used with existing cemented femoral, tibial tray, and patellar components of the Genesis II Total Knee System cleared via K951987 and K953274 or with the system's porous, uncemented femoral and tibial tray components cleared in K030612.
| Identification of Device | Product Code | Classification Name | Code | Predicate<br>510(k) | Identification<br>of Device | Indications for Use | Predicate<br>510(k) |
|-----------------------------------------------------------------------------------------------------------------------------------|-----------------------------------|----------------------------------------------------------------------------------------------------------------|--------------------|---------------------|--------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------|
| Genesis II Deep Flexion<br>C/R Insert for use with<br>Genesis II Total Knee<br>System Components in<br>cemented applications | JWH -<br>Orthopaedics<br>Panel/87 | Knee joint patellofemorotibial<br>polymer/metal/polymer semi-<br>constrained cemented prosthesis -<br>Class II | 21 CFR<br>888.3560 | K951987<br>K953274 | Genesis II<br>Deep Flexion<br>C/R Insert for<br>use with<br>Genesis II<br>Total Knee<br>System<br>Components<br>in cemented<br>applications | The Genesis II Deep Flexion Cruciate Retaining Articular Insert is intended to<br>be used in conjunction with the components of the Genesis II Total Knee<br>System.<br><br>The Genesis II Total Knee System is indicated for rheumatoid arthritis; post-<br>traumatic arthritis, osteoarthritis, or degenerative arthritis in older patients<br>whose age, weight, and activity level are compatible with an adequate long-<br>term result; failed osteotomies, unicompartmental replacement, or total knee<br>replacement. Posterior stabilized knee systems are designed for use in<br>patients in primary and revision surgery, where the anterior and posterior<br>cruciate ligaments are absent or incompetent and the collateral ligaments<br>remain intact.<br><br>The Genesis II Deep Flexion Cruciate Retaining Articular Insert is used with<br>existing cemented femoral, tibial tray, and patellar components of the<br>Genesis II Total Knee System cleared via K951987 and K953274. The<br>Genesis II Deep Flexion Cruciate Retaining Articular Insert is for single use<br>only. | K951987<br>K953274 |
| Genesis II Deep Flexion<br>C/R Insert for use with<br>Genesis II Total Knee<br>System Components in<br>uncemented<br>applications | MBH -<br>Orthopaedics<br>Panel/87 | Knee joint patellofemorotibial<br>metal/polymer porous-coated<br>uncemented prosthesis - Class II | 21 CFR<br>888.3565 | K030612 | Genesis II<br>Deep Flexion<br>C/R Insert for<br>use with<br>Genesis II<br>Total Knee<br>System<br>Components<br>in<br>uncemented<br>applications | The Genesis II Deep Flexion Cruciate Retaining Articular Insert is intended to<br>be used in conjunction with the components of the Genesis II Total Knee<br>System.<br><br>The Genesis II Total Knee System is indicated for rheumatoid arthritis; post-<br>traumatic arthritis, osteoarthritis, or degenerative arthritis in older patients<br>whose age, weight, and activity level are compatible with an adequate long-<br>term result; failed osteotomies, unicompartmental replacement, or total knee<br>replacement. Posterior stabilized knee systems are designed for use in<br>patients in primary and revision surgery, where the anterior and posterior<br>cruciate ligaments are absent or incompetent and the collateral ligaments<br>remain intact.<br><br>The Genesis II Deep Flexion Cruciate Retaining Articular Insert is used with<br>existing cemented patellar and uncemented porous tibial trays and femoral<br>components of the Genesis II Total Knee System cleared via K030612. The<br>Genesis II Deep Flexion Cruciate Retaining Articular Insert is for single use<br>only. | K030612 |
### Mechanical and Clinical Data
A review of the mechanical test data indicated that the Genesis II Deep Flexion Cruciate Retaining Articular Insert is equivalent to devices currently used clinically and is capable of withstanding expected in vivo loading without failure.
{1}------------------------------------------------
# Indications for Use
# Substantial Equivalence Information
The substantial equivalence of the Genesis II Deep Flexion Cruciate Retaining Articular Insert is based on its similarities in indications for use, design features, operational principles, and material composition to the following predicate devices - Smith & Nephew's Genesis II Total Knee System (K951987, K953274, and K030612) and the Genesis II P/S High Flexion Articular Insert (K032295).
{2}------------------------------------------------
Image /page/2/Picture/1 description: The image shows a black and white logo. The logo is a circular seal with text around the perimeter. Inside the circle is a stylized image of an eagle or bird with its wings spread. The bird is facing to the right.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
Mr. Jason Sells Regulatory Affairs Specialist Smith & Nephew, Inc. Orthopaedic Division 1450 Brooks Road Memphis, Tennessee 38116
MAR 1 1 2005
Re: K041825
Trade/Device Name: Genesis II Deep Flexion Cruciate Retaining Articular Insert Regulation Number: 21 CFR 888.3560, 21 CFR 888.3565 Regulation Name: Knee joint patellofemorotibial polymer/metal/polymer semi-constrained cemented prosthesis; and Knee joint patellofemorotibial metal/polymer porous-coated uncemented prosthesis Regulatory Class: II Product Code: JWH, MBH
Dated: February 8, 2005 Received: February 9, 2005
Dear Mr. Sells:
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.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to such 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
{3}------------------------------------------------
### Page 2 - Mr. Jason Sells
CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set CI IN Fart 6077, laboring (21 OS) regulation (21 CFR Part 820); and if applicable, the electronic form in the quality systems (Sections 531-542 of the Act); 21 CFR 1000-1050.
This letter will allow you to begin marketing your device as described in your Section 510(k) This letter will anow you to begin manisting of substantial equivalence of your device to a legally premailted predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please If you desire specific acrioliance at (240) 276-0120. Also, please note the regulation entitled, eonaler the Orition of Computible to the transmit (21CFR Part 807.97). You may obtain other general information on your responsibilities under the Act from the Division of Small other general international and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.
Sincerely yours,
Mack A. Millican
Miriam Provost, Ph.D. Acting Director Division of General, Restorative and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{4}------------------------------------------------
K041525
p. 1/2
### Indications for Use
510(k) Number (if known):
Device Name: Genesis II Deep Flexion Cruciate Retaining Articular Insert
Indications for Use:
The Genesis II Deep Flexion Cruciate Retaining Articular Insert is intended to be used in
the Genesis II Deep Flexion Cruciall Total Knoo System The Genesis II Beep Ronton Crain Crain Crain II Total Knee System.
The Genesis II Total Knee System is indicated for rheumatoid arthritis; post-traumatic arthritis, post-traumatic arthritis, The Genesis II Total Knee System is Indicated for moder age, weight, and activity level are
osteoarthritis, or degenerative arthritis in older patients whose age, weigement osteoarthritis, or degenerative annifilis in three ages - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - compatible with an adequare long-term resort, lance systems are designed for use in patients in patients in patients in or total knee replacement. Postenor stablized know of each of the ligaments are absent or primary ond the collateral ligaments remain intact.
The Genesis II Deep Flexion Cruciate Retaining Articular Insert is used with existing cemented
Santa Cruciate Retaining Articular of the Canasia II Total Knoo System cleared The Genesis II Deep Flexion Cruciale Netaining Fri. In Total Knee System cleared via
femoral, tibial tray, and patellar components of the Genesis II Total Kneed in the femoral, fibial tray, and patellar components of the Genesis II.
K951987 and K953274. The Genesis II Deep Flexion Cruciate Retaining Articular Insert is for single use only.
AND/OR Prescription Use × (Part 21 CFR 801 Subpart D)
Over-The-Counter Use 121 CFR 807 Subpart C)
(Please DO NOT WRITE BELOW THIS LINE – CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
(Division Sign-Off)
storative. and Neurological
**510(k) Number** K041825
Page 1 of _
{5}------------------------------------------------
<041825
P.2-/2
## Indications for Use
510(k) Number (if known):
Device Name: Genesis II Deep Flexion Cruciate Retaining Articular Insert
Indications for Use:
The Genesis II Deep Flexion Cruciate Retaining Articular Insert is intended to be used in conjunction with the components of the Genesis II Total Knee System.
The Genesis II Total Knee System is indicated for rheumatoid arthritis; post-traumatic arthritis, me Ocheolo il Total Ande Bysterthritis in older patients whose age, weight, and activity level are compatible with an adequate long-term result; failed osteotomies, unicompartmental replacement, componible with an odequate ting castems are designed for use in patients in or total replacement. It , where the anterior and posterior cruciate ligaments are absent or incompetent and the collateral ligaments remain intact.
The Genesis II Deep Flexion Cruciate Retaining Articular Insert is used with existing cemented patellar and uncemented porous tibial trays and femoral components of the Genesis II Total Knee pattern cleared via K030612. The Genesis II Deep Flexion Cruciate Retaining Articular Insert is for single use only.
Prescription Use × (Part 21 CFR 801 Subpart D)
AND/OR
Over-The-Counter Use (21 CFR 807 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE – CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Muk N Miller
Division Sign Off
Division of General, Restorative,
and Neurological Devices
10(k) Number K041825
Page 1 of
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.