(158 days)
The Scorpio® Total Knee System components are for use in total knee arthroplasty to relieve pain and restore knee function for indications such as: painful, disabling joint disease of the knee resulting from degenerative arthritis, rheumatoid arthritis or post-traumatic arthritis; post-traumatic loss of knee joint configuration and function; moderate varus, valgus or flexion deformity in which the ligamentous structures can be returned to adequate function and stability; revision of previous unsuccessful knee replacement or other procedure. Additional indications for the posterior stabilized components include: ligamentous instability requiring implant bearing surface geometries with increased constraint; absent or non-functioning posterior cruciate ligament. These products are intended to achieve fixation without the use of bone cement.
The device includes femoral and tibial components of a total knee system. These components are used for the replacement of the bearing and/or articulating surfaces of the distal femur, proximal tibia to relieve pain, instability and the restriction of motion due to degenerative bone disease, including osteoarthritis, rheumatoid arthritis, failure of other devices or trauma.
The provided text is a 510(k) Premarket Notification for the "Scorpio Total Knee System with Peri-Apatite Coating." This document, issued by the FDA in 2004, is primarily focused on demonstrating "substantial equivalence" of the device to a predicate device, rather than providing detailed acceptance criteria and a study proving those criteria were met in the way one might expect for a novel device or software.
Here's an analysis based on the provided text:
1. Table of Acceptance Criteria and Reported Device Performance:
The document does not provide a table with explicit numerical acceptance criteria for performance metrics (e.g., sensitivity, specificity, accuracy for a diagnostic device; or specific mechanical thresholds for an implant). Instead, the acceptance criteria are implicitly linked to demonstrating equivalence to the predicate device and meeting established standards for similar prostheses.
The "reported device performance" is summarized qualitatively:
| Acceptance Criterion (Implied) | Reported Device Performance |
|---|---|
| Equivalence to predicate device | Achieved through risk analysis and R&D testing. |
| Compliance with Class II Special Controls Guidance Document (Knee Joint Patellofemorotibial and Femorotibial Metal/Polymer Porous-Coated Uncemented Prostheses; Guidance for Industry and FDA, January 16, 2003) | Testing performed in accordance with this guidance document, including porous coating characterization, baseplate fatigue, contact area/stress analyses, range of motion/constraint, locking mechanism testing, UHMWPe material properties. |
| Safety of Peri-Apatite® coating | Safety testing performed. |
| Effect of coating on pore size and volume | Summary of effect performed. |
| Overall safety and effectiveness for total knee replacement without bone cement | "The results demonstrate that the Scorpio Total Knee System with Peri-Apatite® coating is safe and effective for total knee replacement without bone cement." |
2. Sample Size Used for the Test Set and Data Provenance:
The document describes engineering and laboratory testing, not human-subject or clinical studies with "test sets" in the diagnostic or AI sense.
- Sample Size: Not specified in terms of number of devices or components tested, but implies multiple units for various tests (e.g., fatigue, material properties).
- Data Provenance: Not applicable in the context of human data. The testing refers to "research and development testing" likely performed in a laboratory setting by Howmedica Osteonics Corp.
3. Number of Experts Used to Establish the Ground Truth for the Test Set and Qualifications of Those Experts:
- This is not applicable as the "ground truth" for the device's mechanical and material properties is established through standardized engineering tests and measurements, not expert human evaluation of cases.
4. Adjudication Method for the Test Set:
- Not applicable, as this refers to human expert judgment, which was not used to establish the "truth" for this type of device testing.
5. If a Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study was done:
- No, an MRMC study was not performed. This type of study is relevant for diagnostic devices (especially those involving image interpretation by humans). The submission is for a knee implant, which undergoes mechanical and material testing.
6. If a Standalone (i.e., algorithm only without human-in-the-loop performance) was done:
- Not applicable. This is not a software algorithm or AI device. The device is a physical knee implant.
7. The Type of Ground Truth Used:
- The "ground truth" in this context refers to established engineering standards, material specifications, and physical measurements (e.g., strength, fatigue life, pore size, range of motion) as defined by the Class II Special Controls Guidance Document and general engineering principles for medical implants.
8. The Sample Size for the Training Set:
- Not applicable. This is not an AI/machine learning device that requires a training set.
9. How the Ground Truth for the Training Set Was Established:
- Not applicable.
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Scorpio" Total Knee System w/ Peri-Apatite® Couting
K033971 Page 1 of 2
510(k) Premarket Notification
MAY 2 8 2004
Summary of Safety and Effectiveness
| Contact Person: | Denise DucheneSr. Regulatory Affairs SpecialistHowmedica Osteonics Corp.325 Corporate Dr.Mahwah, NJ 07430(201) 831-5612 (Phone)(201) 831-6038 (FAX) |
|---|---|
| Date: | December 10, 2003 |
| Device: | Scorpio® Total Knee System |
| Classification: | Knee Joint; Patellofemorotibial; Metal/polymer; Porous-coated;Uncemented prosthesis - Class II - 21 CFR 888.3565 |
| Predicate Devices: | Scorpio® Total Knee System |
| Indications for Use: | The Scorpio® Total Knee System components are for use in totalknee arthroplasty to relieve pain and restore knee function forindications such as: painful, disabling joint disease of the kneeresulting from degenerative arthritis, rheumatoid arthritis or post-traumatic arthritis; post-traumatic loss of knee joint configurationand function; moderate varus, valgus or flexion deformity in whichthe ligamentous structures can be returned to adequate functionand stability; revision of previous unsuccessful knee replacementor other procedure. Additional indications for the posteriorstabilized components include: ligamentous instability requiringimplant bearing surface geometries with increased constraint;absent or non-functioning posterior cruciate ligament.These products are intended to achieve fixation without the use ofbone cement |
| Proposed Modification: | To add a Peri-Apatite® coating and allow for use without bonecement. |
| Device Description: | The device includes femoral and tibial components of a total kneesystem. These components are used for the replacement of thebearing and/or articulating surfaces of the distal femur, proximaltibia to relieve pain, instability and the restriction of motion due todegenerative bone disease, including osteoarthritis, rheumatoid |
| arthritis, failure of other devices or trauma. |
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Summary of Data:
A risk analysis and research and development testing have been performed to demonstrate equivalence of the proposed products to the predicate devices. The testing includes porous coating characterization, baseplate fatigue testing, contact area / stress analyses; range of motion range of constraint testing; locking mechanism testing; UHMWPe material properties in accordance with the Class II Special Controls Guidance Document: Knee Joint Patellofemorotibial and Femorotibial Metal/Polymer Porous-Coated Uncemented Prostheses; Guidance for Industry and FDA," dated January 16, 2003. The testing also includes safety testing for the Peri-Apatite® coating and a summary of the effect of the coating on pore size and pore volume. The results demonstrate that the Scorpio Total Knee System with Peri-Apatite® coating is safe and effective for total knee replacement without bone cement.
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DEPARTMENT OF HEALTH & HUMAN SERVICES
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 circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the perimeter. Inside the circle is an abstract symbol that resembles three stylized stripes or lines, possibly representing the concept of health or human services.
Public Health Service
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
MAY 2 8 2004
Ms. Lorraine T. Montemurro Manager, Regulatory Affairs Stryker Howmedica Osteonics 325 Corporate Drive Mahwah, New Jersey 07430
Re: K033971
Trade/Device Name: Scorpio Total Knee System with Peri-Apatite® Coating Regulation Number: 21 CFR 888.3565 Regulation Name: Knee joint, patcllofemorotibial metal/polymer porous-coated uncemented prosthesis Regulatory Class: II Product Code: MBH Dated: April 20, 2004
Received: April 21, 2004
Dear Ms. Montemurro:
We have reviewed your Scction 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 CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
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Page 2 - Ms. Lorraine T. Montemurro
This letter will allow you to begin marketing your device as described in your Section 510(k) rms istet notification. The FDA finding of substantial equivalence of your device to a legally marketed 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 in you t the Office of Compliance at (301) 594-4659. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). 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) 443-6597 or at its Internet address http://www.fda.gov/cdrh/dsma/dsmamain.html
Sincerely vours,
Sincerely yours,
L. Mark A. Mulkerson
Celia M. Witten, Ph.D., M.D. Director Division of General, Restorative and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Page
| 510(k) Number (if known): | K033971 |
|---|---|
| --------------------------- | --------- |
Device Name: Scorpio" Total Knec System with Peri-Apatite® Coating
Indications for Use:
The Scorpio® Total Knee System components included in this submission are intended for use in total knee arthroplasty to relieve pain and restore knee functions for indications such as:
- Painful, disabling joint discase of the knee resulting from degenerative arthritis, . rheumatoid arthritis or post-traumatic arthritis
- . Post-traumatic loss of knee joint configuration and function
- Moderate varus, valgus or flexion deformity in which the ligamentous structures can be . returned to adequate function and stability;
- Revision of previous unsuccessful knee replacement or other procedure; .
Additional indications for the posterior stabilized components include:
- Ligamentous instability requiring implant bearing surface geometrics with increased . constraint
- Absent or non-functioning posterior cruciate ligament
These components are single use only and are intended for implantation without bone cement.
(PLEASE DO NOT WRITE BELOW THIS LINE – CONTINUE ON ANOTHER PAGE IF
NEEDED)
Concurrence of CDRH, Office of Deuce Evaluation (ODE)
(Division Sign-Off)
Division of General, Restorative,
and Neurological Devices
| Labels | Values |
|---|---|
| Prescription Use | X |
| 510(k) Number | K033971 |
| Over-the-Counter Use |
(Per 21 CFR 801.109)
OR
§ 888.3565 Knee joint patellofemorotibial metal/polymer porous-coated uncemented prosthesis.
(a)
Identification. A knee joint patellofemorotibial metal/polymer porous-coated uncemented 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 is designed to achieve biological fixation to bone without the use of bone cement. This identification includes fixed-bearing knee prostheses where the ultra high molecular weight polyethylene tibial bearing is rigidly secured to the metal tibial base plate.(b)
Classification. Class II (special controls). The special control is FDA's guidance: “Class II Special Controls Guidance Document: Knee Joint Patellofemorotibial and Femorotibial Metal/Polymer Porous-Coated Uncemented Prostheses; Guidance for Industry and FDA.” See § 888.1 for the availability of this guidance.