(74 days)
The Citation TMZF HA Stem is indicated for cementless primary hip surgery in cases of non-inflammatory degenerative joint disease including osteoarthritis, avascular necrosis, rheumatoid arthritis, and correction of functional deformity. Additionally it can be used in treatment of nonunion, and femoral neck and trochanteric fractures of the proximal femur with head involvement that are unmanageable using other techniques. It is also indicated for use in revision procedures where other treatments or devices have failed.
The Citation TMZF HA Stems are anatomic stems in a variety of lengths and distal diameters. The larger diameter stems have a rotated distal slot that contains distal flutes or grooves. This stem is intended for the reconstruction of the head and neck of the femoral joint. The device is intended for primary reconstruction of the proximal femur or revision of a previous total hip arthroplasty. The stems can be used with any currently available Howmedica Osteonics acetabular components and V40 Femoral Heads that can be mated with a 5° 40' BG taper. The Citation TMZF HA Stems will be fabricated from TMZF Alloy. The stems are coated with a CP Titanium plasma spray coating and Pure-Fix™ HA.
This 510(k) submission is for the Citation TMZF HA Stem, a femoral component for hip arthroplasty. The device is not an AI/ML powered device, therefore, many of the requested categories are not applicable.
1. Table of Acceptance Criteria and Reported Device Performance
| Acceptance Criteria | Reported Device Performance |
|---|---|
| Substantial Equivalence to Predicate Devices | The Citation TMZF HA Stem is deemed substantially equivalent to the Meridian® Titanium Femoral Stem (K972228), Howmedica® Asymmetric Stem Femoral Component (K955871), and Osteonics® Omnifit® AD-HA Hip Stem Series (K941366) based on intended use, materials, design, and operational principles. |
| Fatigue Strength | Testing indicates that the addition of the HA coating over plasma spray has no effect on the stem fatigue strength. This implies the device maintains mechanical integrity comparable to its predicate devices without the HA coating. |
2. Sample Size Used for the Test Set and Data Provenance
Not applicable for this type of device. The evaluation is based on comparative analysis with predicate devices and material/mechanical testing, not a clinical test set with patient data.
3. Number of Experts Used to Establish the Ground Truth for the Test Set and Qualifications of those Experts
Not applicable. Ground truth as typically understood for AI/ML devices is not relevant here. Substantial equivalence is determined by regulatory bodies based on engineering and design principles, and comparison to existing legally marketed devices.
4. Adjudication Method for the Test Set
Not applicable. There was no "test set" in the sense of clinical data requiring expert adjudication.
5. If a Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study Was Done
No. This is not an AI/ML device, and an MRMC study is not relevant for the evaluation of a hip stem.
6. If a Standalone (i.e., algorithm only without human-in-the-loop performance) Was Done
Not applicable. This is a physical medical device, not an algorithm.
7. The Type of Ground Truth Used
The "ground truth" for this submission is regulatory in nature. It centers on:
- Substantial equivalence: Demonstrated by comparing the device's intended use, materials, design, and operational principles to legally marketed predicate devices.
- Mechanical performance: Demonstrated through laboratory testing (e.g., fatigue testing) to ensure the device meets safety and performance standards, particularly concerning the effect of the HA coating.
8. The Sample Size for the Training Set
Not applicable. There is no AI/ML model or "training set" for physical medical devices of this nature.
9. How the Ground Truth for the Training Set Was Established
Not applicable.
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JAN 2 1 2000
510(k) Summary
Device: Citation TMZF HA Stem
The Citation TMZF HA Stems are anatomic stems in a variety of lengths and distal diameters. The larger diameter stems have a rotated distal slot that contains distal flutes or grooves.
This stem is intended for the reconstruction of the head and neck of the femoral joint. The device is intended for primary reconstruction of the proximal femur or revision of a previous total hip arthroplasty. The stems can be used with any currently available Howmedica Osteonics acetabular components and V40 Femoral Heads that can be mated with a 5° 40' BG taper.
The Citation TMZF HA Stems will be fabricated from TMZF Alloy. The stems are coated with a CP Titanium plasma spray coating and Pure-Fix™ HA.
The substantial equivalence of the Citation TMZF HA Stems is based upon equivalence in intended use, materials, design, and operational principles to Meridian® Titanium Femoral Stem (K972228); the Howmedica® Asymmetric Stem Femoral Component (K955871); and the Osteonics® Omnifit® AD-HA Hip Stem Series (K941366).
Testing indicates that the addition of the HA coating over plasma spray has no effect on the stem fatigue strength.
| For information contact: | Jennifer A. Daudelin |
|---|---|
| Rutherford Regulatory Affairs | |
| Howmedica Osteonics Corp. | |
| 359 Veterans Boulevard | |
| Rutherford, NJ 07070 | |
| Phone: | (201) 507-7283 |
| Fax: | (201) 507-6870 |
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Image /page/1/Picture/1 description: The image shows the seal of the Department of Health & Human Services (HHS) of the United States. The seal features a stylized eagle with three stripes representing the three levels of government: federal, state, and local. The eagle is surrounded by text that reads "DEPARTMENT OF HEALTH & HUMAN SERVICES • USA" in a circular arrangement.
Public Health Service
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
JAN 21 2000
Ms. Jennifer A. Daudelin Regulatory Affairs Stryker Howmedica Osteonics 359 Veterans Boulevard Rutherford, New Jersey 07070
Re: K993768 Trade Name: Citation TMZF HA Stem Regulatory Class: II Product Code: MEH Dated: October 29, 1999 Received: November 8, 1999
Dear Ms. Daudelin:
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. 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 Regulations, Title 21, Parts 800 to 895. A 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 comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device 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 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. 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.
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Page 2 - Ms. Jennifer A. Daudelin
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) 594-4595. 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,
Russell Sage
James E. Dillard III Acting Director Division of General and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Indications for Use
510(k) Number (if known): K993768
Device Name: Citation TMZF HA Stem
Indications for Use:
The Citation TMZF HA Stem is indicated for cementless primary hip surgery in cases of non-inflammatory degenerative joint disease including osteoarthritis, avascular necrosis, rheumatoid arthritis, and correction of functional deformity. Additionally it can be used in treatment of nonunion, and femoral neck and trochanteric fractures of the proximal femur with head involvement that are unmanageable using other techniques. It is also indicated for use in revision procedures where other treatments or devices have failed.
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)
| Concurrence of CDRH, Office of Device Evaluation (ODE) | |
|---|---|
| Prescription UseOR(Per 21 CFR 801.109)(Division Sian-Off)Division of General Resto510(k) Number | Over-The-Counter Use(Optional Format 1-2-96) |
§ 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.