The Signal Medical Corporation 28mm Ceramic Femoral Heads are manufactured from zirconium oxide. The design is made available in three (3) sizes identical to the cobalt chrome femoral heads in the Signal Medical Corporation 510K (K971681) (-3.5, 0, +3.5). These ceramic femoral heads should only be used on the Signal Medical Corporation (SMC) femoral component of the hip, and should never be resterilized.

AI/ML Overview

The provided text is a 510(k) summary for a medical device: "Signal Medical Corporation 28mm Ceramic Femoral Heads". This document is a regulatory approval, not a scientific study report. As such, it does not contain the information requested regarding acceptance criteria and a study proving the device meets those criteria.

The 510(k) process is about demonstrating substantial equivalence to a legally marketed predicate device, not necessarily proving performance against specific quantitative acceptance criteria in a clinical study.

Therefore, I cannot provide the requested table or answer the specific questions about sample sizes, ground truth, expert adjudication, or MRMC studies for this device based on the given text.

The document primarily states:

Device Description: 28mm Ceramic Femoral Heads made from zirconium oxide, available in three sizes, to be used only with Signal Medical Corporation's femoral component.
Indications for Use: Osteoarthritis, Rheumatoid Arthritis, Traumatic Arthritis, and where conservative procedures have failed or are unacceptable.
Regulatory Classification: Class II, Product Code LZO.
Substantial Equivalence: The FDA determined the device is substantially equivalent to devices marketed prior to May 28, 1976.
Limitation: "package insert must reflect that Signal Medical Corporation's 28 mm Zirconia Ceramic Femoral Head is only to be used with Signal Medical Corporation's cobalt-chrome hip stems with the 5.708 degree trunnions."

There is no mention of specific performance metrics, acceptance criteria, or any clinical or technical study results in this 510(k) summary document that would allow me to answer your detailed questions.

Summary

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JUN 25 1998

510K SUMMARY OF SAFETY AND EFFECTIVENESS

Indications for use

Osteoarthritis ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1. Rheumatoid Arthritis
rn Traumatic Arthritis
Where the use of a more conservative procedure has failed or is 4. unacceptable.

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Image /page/1/Picture/2 description: The image shows the seal of the U.S. Department of Health & Human Services. The seal features the department's name in a circular arrangement around a stylized caduceus symbol. The text reads "DEPARTMENT OF HEALTH & HUMAN SERVICES · USA". The caduceus is represented by three abstract, curved lines.

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

JUN 25 1998

Louis A. Serafin, Jr., M.D. Signal Medical Corporation 3315 Berry Drive Lakeport, Michigan 48059

Re : K981302 SMC Ceramic Femoral Head - 28 mm Regulatory Class: II Product Code: LZO Dated: April 6, 1997 Received: April 9, 1997

Dear Dr. Serafin:

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). You may, therefore, market the device, subject to the general controls provisions of the Act and the following limitation that the package insert must reflect that Signal Medical Corporation's 28 mm Zirconia Ceramic Femoral Head is only to be used with Signal Medical Corporation's cobalt-chrome hip stems with the 5.708 degree trunnions. This information must be identified in the package insert.

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 (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Requlations, Title 21, Parts 800 to 895. ਜੋ substantially equivalent determination assumes compliance with the current Good Manufacturing Practice requirement, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic (QS) inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to

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Page 2 - Louis A. Serafin, Jr., M.D.

comply with the GMP regulation may result in regulatory In addition, FDA may publish further announcements action. accron. In daureror, in the Federal Register. Please note: this 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 enrough Siz or on 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 regulation (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 obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address "http://www.fda.gov/cdrh/dsmamain.html".

Sincerely yours,

Celia M. Witten, Ph.D., M.D. Director Division of General and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health

Enclosure

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් ක්‍රමුණු ලැබූ බැඳින් පිහිටි පිහිටි පිහිටි පිහිටි පිහිටි පිහිටි පිහිටි පිහිටි පිහිටි පිහිටි පිහිටි පිහිටි පිහිටි පිහිටි පිහිටි පිහිටි පිහිටි පිහිටි පිහිටි පිහිටි පිහිටි පිහ 659 11 1

510(k) Number (if known):

Device Names SMC 28MM CERAMIC FEMORAL HEAD

Indications For Use:

1 . . OSTEOARTHRITIS
RHEUMATOID ARTHRITIS 2 .
1. TRAUMATIC ARTHRITIS
WHERE THE USE OF A MORE CONSERVATIVE PROCEDURE HAS FAILED 4 . OR IS UNACCEPTABLE.

(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE on another Page if needed)

Concurrence of CDRH, Office of Device Evaluation (ODDE)

Prescription Use	X	OR	Over-The-
Counter Use
(Per 21 CFR 801.109)

(Division Sign-Off)		(Optional Format
Division of General Restorative Devices
510(k) Number	K981302

Regulation Number and Section

§ 888.3353 Hip joint metal/ceramic/polymer semi-constrained cemented or nonporous uncemented prosthesis.

(a)
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.(b)
Classification. Class II.