ZIMMER TRABECULAR METAL HUMERAL STEM, SIZES 6MM AND 8MM

K050761 · Zimmer, Inc. · KWT · Apr 11, 2005 · Orthopedic

Device Facts

• Record ID: K050761
• Device Name: ZIMMER TRABECULAR METAL HUMERAL STEM, SIZES 6MM AND 8MM
• Applicant: Zimmer, Inc.
• Product Code: KWT · Orthopedic
• Decision Date: Apr 11, 2005
• Decision: SESE
• Submission Type: Special
• Regulation: 21 CFR 888.3650
• Device Class: Class 2
• Attributes: Therapeutic

Intended Use

Prosthetic replacement with this device may be indicated for the treatment of severe pain or significant disability in degenerative, rheumatoid, or traumatic disease of the glenohumeral joint; ununited humeral head fractures of long duration; irreducible 3-and 4-part proximal humeral fractures; avascular necrosis of the humeral head; or other difficult clinical management problems where arthrodesis or resectional arthoplasty is not acceptable. The assembled humeral component may be used alone for hemiarthroplasty or combined with the glenoid component for total shoulder arthroplasty. Humeral heads with heights of 27mm or greater may be used for difficult clinical management problems involving rotator cuff deficiency where arthrodesis or conventional nonconstrained arthroplasty is not acceptable.

Device Story

Single-use humeral stem implant for shoulder joint replacement; features Trabecular Metal on proximal portion for biological ingrowth; includes anti-rotational fin, proximal stem collar, suture holes, and distal fluted body. Used by orthopedic surgeons in clinical settings for hemiarthroplasty or total shoulder arthroplasty. Implant replaces damaged humeral head/joint to restore function and reduce pain. Device modification extends existing product line to include 6mm and 8mm sizes.

Clinical Evidence

Bench testing only; no clinical data provided. Non-clinical performance testing demonstrated safety and effectiveness equivalent to the predicate device.

Technological Characteristics

Humeral stem prosthesis featuring Trabecular Metal for biological ingrowth; includes anti-rotational fin, proximal collar, suture holes, and distal fluted body. Materials and manufacturing processes are identical to the predicate device. Sizes 6mm and 8mm.

Indications for Use

Indicated for patients with severe pain or disability due to degenerative, rheumatoid, or traumatic glenohumeral joint disease; ununited humeral head fractures; irreducible 3- or 4-part proximal humeral fractures; avascular necrosis; or conditions requiring hemiarthroplasty or total shoulder arthroplasty where arthrodesis/resection is unacceptable. Specific use for rotator cuff deficiency when using humeral heads ≥27mm.

Regulatory Classification

Identification

A shoulder joint metal/polymer non-constrained cemented prosthesis is a device intended to be implanted to replace a shoulder joint. The device limits minimally (less than normal anatomic constraints) translation in one or more planes. It has no linkage across-the-joint. This generic type of device includes prostheses that have a humeral component made of alloys, such as cobalt-chromium-molybdenum, and a glenoid resurfacing component made of ultra-high molecular weight polyethylene, and is limited to those prostheses intended for use with bone cement (§ 888.3027).

Special Controls

*Classification.* Class II. The special controls for this device are:(1) FDA's: (i) “Use of International Standard ISO 10993 ‘Biological Evaluation of Medical Devices—Part I: Evaluation and Testing,’ ” (ii) “510(k) Sterility Review Guidance of 2/12/90 (K90-1),” (iii) “Guidance Document for Testing Orthopedic Implants with Modified Metallic Surfaces Apposing Bone or Bone Cement,” (iv) “Guidance Document for the Preparation of Premarket Notification (510(k)) Application for Orthopedic Devices,” and (v) “Guidance Document for Testing Non-articulating, ‘Mechanically Locked’ Modular Implant Components,” (2) International Organization for Standardization's (ISO): (i) ISO 5832-3:1996 “Implants for Surgery—Metallic Materials—Part 3: Wrought Titanium 6-Aluminum 4-Vandium Alloy,” (ii) ISO 5832-4:1996 “Implants for Surgery—Metallic Materials—Part 4: Cobalt-Chromium-Molybdenum Casting Alloy,” (iii) ISO 5832-12:1996 “Implants for Surgery—Metallic Materials—Part 12: Wrought Cobalt-Chromium-Molybdenum Alloy,” (iv) ISO 5833:1992 “Implants for Surgery—Acrylic Resin Cements,” (v) ISO 5834-2:1998 “Implants for Surgery—Ultra-high Molecular Weight Polyethylene—Part 2: Moulded Forms,” (vi) ISO 6018:1987 “Orthopaedic Implants—General Requirements for Marking, Packaging, and Labeling,” and (vii) ISO 9001:1994 “Quality Systems—Model for Quality Assurance in Design/Development, Production, Installation, and Servicing,” and (3) American Society for Testing and Materials': (i) F 75-92 “Specification for Cast Cobalt-28 Chromium-6 Molybdenum Alloy for Surgical Implant Material,” (ii) F 648-98 “Specification for Ultra-High-Molecular-Weight Polyethylene Powder and Fabricated Form for Surgical Implants,” (iii) F 799-96 “Specification for Cobalt-28 Chromium-6 Molybdenum Alloy Forgings for Surgical Implants,” (iv) F 1044-95 “Test Method for Shear Testing of Porous Metal Coatings,” (v) F 1108-97 “Titanium-6 Aluminum-4 Vanadium Alloy Castings for Surgical Implants,” (vi) F 1147-95 “Test Method for Tension Testing of Porous Metal Coatings,” (vii) F 1378-97 “Specification for Shoulder Prosthesis,” and (viii) F 1537-94 “Specification for Wrought Cobalt-28 Chromium-6 Molybdenum Alloy for Surgical Implants.”

Predicate Devices

• Zimmer Trabecular Metal Humeral Stem (K041459)

Submission Summary (Full Text)

{0}------------------------------------------------

zımmer

Special 510(k): Device Modification

## Summary of Safety and Effectiveness

| Submitter: | Zimmer, Inc.<br>P.O. Box 708<br>Warsaw, IN 46581-0708 |
|---------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Contact Person: | Dalene T. Binkley, RAC<br>Senior Associate, Regulatory Affairs<br>Telephone: [phone]<br>Fax: [phone] |
| Date: | March 22, 2005 |
| Trade Name: | Zimmer Trabecular Metal™ Humeral Stem, Sizes<br>6mm and 8mm |
| Common Name: | Total Shoulder System |
| Classification Name<br>and Reference: | Shoulder joint metal/polymer non-constrained<br>cemented prosthesis. 21 CFR § 888.3650<br>Shoulder joint humeral (hemi-shoulder) metallic<br>uncemented prosthesis. 21 CFR § 888.3690 |
| Predicate Device: | Zimmer Trabecular Metal Humeral Stem,<br>manufactured by Zimmer, Inc., K041459, cleared<br>September 3, 2004. |
| Device Description: | The Zimmer Trabecular Metal Humeral Stem is<br>intended to be a single use only implant that is used<br>to replace a shoulder joint. |

This humeral stem uses Trabecular Metal around
the proximal part of the stem for biological
ingrowth. It also has an anti-rotational fin, a
proximal stem collar, suture holes, and a distal
fluted stem body. The product line has been
extended to include 6mm and 8mm humeral stems.

| Intended Use: | Prosthetic replacement with this device may be<br>indicated for the treatment of severe pain or<br>significant disability in degenerative, rheumatoid, or<br>traumatic disease of the glenohumeral joint;<br>ununited humeral head fractures of long duration; |
|---------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|---------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

{1}------------------------------------------------

Image /page/1/Picture/0 description: The image contains the word "zimmer" with a stylized "Z" in a circle to the left of the word. The "Z" is black and bolded, and the circle around it is white with a black outline. The word "zimmer" is in lowercase letters and is also black and bolded. The font appears to be sans-serif.

ਪਟ

| | irreducible 3-and 4-part proximal humeral fractures;<br>avascular necrosis of the humeral head; or other<br>difficult clinical management problems where<br>arthrodesis or resectional arthoplasty is not<br>acceptable. The assembled humeral component may<br>be used alone for hemiarthroplasty or combined<br>with the glenoid component for total shoulder<br>arthroplasty. Humeral heads with heights of 27mm<br>or greater may be used for difficult clinical<br>management problems involving rotator cuff<br>deficiency where arthrodesis or conventional<br>nonconstrained arthroplasty is not acceptable. |
|----------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Comparison to Predicate Device: | The Zimmer Trabecular Metal Humeral Stem is<br>packaged, manufactured, and sterilized using the<br>same materials and processes as the predicate<br>device. The subject device also has the same<br>intended use and fixation methods as the predicate<br>device. |
| Performance Data (Nonclinical<br>and/or Clinical): | Non-Clinical Performance and Conclusions:<br>Non-clinical testing demonstrated that the Zimmer<br>Trabecular Metal Humeral Stem, Sizes 6mm and<br>8mm is as safe and effective as the predicate device |

{2}------------------------------------------------

Image /page/2/Picture/2 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 a stylized design featuring three abstract human figures, possibly representing people or families, in a flowing, interconnected manner.

## APR 1 1 2005

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

Ms. Dalene T. Binkley, RAC Senior Associate, Corporate Regulatory Affairs Zimmer. Inc. P.O. Box 708 Warsaw. Indiana 46581-0708

Re: K050761

Trade/Device Name: Zimmer Trabecular Metal™ Humeral Stem, Sizes 6mm and 8mm Regulation Number: 21 CFR 888.3650 Regulation Name: Shoulder joint metal/ polymer non-constrained cemented prosthesis Regulatory Class: II Product Code: KWT, HSD Dated: March 22, 2005 Received: March 24, 2005

Dear Ms. Binkley:

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 CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set 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.

{3}------------------------------------------------

Page 2 -- Ms. Binkley, RAC

This letter will allow you to begin marketing your device as described in your Section 510(k) premarket 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 contact the Office of Compliance at [phone]. 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 [phone] or [phone] or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.

Sincerely yours,

A. Michael G. Barnett, Ph.D.

C. Provost, Ph.D. Acting Director Division of General, Restorative and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health

Enclosure

{4}------------------------------------------------

## Indications for Use

510(k) Number (if known):

Device Name:

Zimmer Trabecular Metal™ Humeral Stem, Sizes 6mm and 8mm

## Indications for Use:

Prosthetic replacement with this device may be indicated for the treatment of severe pain or significant disability in degenerative, rheumatoid, or traumatic disease of the glenohumeral joint; ununited humeral head fractures of long duration; irreducible 3-and 4-part proximal humeral fractures; avascular necrosis of the humeral head; or other difficult clinical mana gement problems where arthrodesis or resectional arthoplasty is not acceptable. The assembled humeral component may be used alone for hemiarthroplasty or combined with the glenoid component for total shoulder arthroplasty. Humeral heads with heights of 27mm or greater may be used for difficult clinical management problems involving rotator cuff deficiency where arthrodesis or conventional nonconstrained arthroplasty is not acceptable.

Prescription Use X (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)

Stup Llodn

(Division Sign-Off)
Division of General, Restorative
and Neurological Devices

Page 1 of 1

510(k) Num