FEMORAL HEADS, 2.5 AND 7.5 MM NECK LENGTH

K122504 · United Orthopedic Corporation · LPH · Oct 10, 2012 · Orthopedic

Device Facts

• Record ID: K122504
• Device Name: FEMORAL HEADS, 2.5 AND 7.5 MM NECK LENGTH
• Applicant: United Orthopedic Corporation
• Product Code: LPH · Orthopedic
• Decision Date: Oct 10, 2012
• Decision: SESE
• Submission Type: Special
• Regulation: 21 CFR 888.3358
• Device Class: Class 2
• Attributes: Therapeutic

Intended Use

This device is indicated in hip arthroplasty for reduction or relief of pain and/or improved hip function in skeletally mature patients with the following conditions: For use as a Total Hip Replacement 1. Painful, disabling joint disease of the hip resulting from: degenerative arthritis, rheumatoid arthritis, post-traumatic arthritis or late stage avascular necrosis. 2. Revision of previous unsuccessful femoral head replacement, cup arthroplasty or other procedure. 3. Clinical management problems where arthrodesis or alternative reconstructive techniques are less likely to achieve satisfactory results. For use as a Bipolar Hip Replacement 1. Femoral head/neck fractures or non-unions. 2. Aseptic necrosis of the femoral head. 3. Osteo-, rheumatoid, and post-traumatic arthritis of the hip with minimal acetabular involvement or distortion. Cemented stem is designed for cemented use only.

Device Story

Femoral head prosthesis; modular component for hip arthroplasty systems. Manufactured from CoCrMo alloy (ASTM F1537). Extension of existing U2 Hip System; provides additional +2.5 mm and +7.5 mm offset options for 28, 32, and 36 mm diameter heads. Used by orthopedic surgeons in clinical settings during total or bipolar hip replacement procedures. Integrates with previously cleared United Orthopedic Corporation stems and liners (e.g., U2 Acetabular Cup, Revision Stem, Press-fit Stem). Provides mechanical articulation within the hip joint; offset variations allow surgeons to optimize joint tension and stability based on patient anatomy. Benefits include restored hip function and pain relief for patients with degenerative joint disease or fractures.

Clinical Evidence

Bench testing only. Performance data included femoral head disassembly load testing conducted in accordance with FDA guidance for non-articulating, mechanically locked modular implant components to ensure safety and substantial equivalence.

Technological Characteristics

Material: CoCrMo alloy (ASTM F1537). Form factor: Modular femoral head prosthesis. Sizes: 28, 32, 36 mm diameters with +2.5 mm and +7.5 mm offsets. Connectivity: None (mechanical implant). Sterilization: Not specified.

Indications for Use

Indicated for skeletally mature patients undergoing hip arthroplasty (Total or Bipolar) for pain relief or improved function due to degenerative, rheumatoid, or post-traumatic arthritis, avascular necrosis, femoral head/neck fractures, non-unions, or revision of failed prior procedures.

Regulatory Classification

Identification

A hip joint metal/polymer/metal semi-constrained porous-coated uncemented prosthesis is a device intended to be implanted to replace a hip 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 has a femoral component made of a cobalt-chromium-molybdenum (Co-Cr-Mo) alloy or a titanium-aluminum-vanadium (Ti-6Al-4V) alloy and an acetabular component composed of an ultra-high molecular weight polyethylene articulating bearing surface fixed in a metal shell made of Co-Cr-Mo or Ti-6Al-4V. The femoral stem and acetabular shell have a porous coating made of, in the case of Co-Cr-Mo substrates, beads of the same alloy, and in the case of Ti-6Al-4V substrates, fibers of commercially pure titanium or Ti-6Al-4V alloy. The porous coating has a volume porosity between 30 and 70 percent, an average pore size between 100 and 1,000 microns, interconnecting porosity, and a porous coating thickness between 500 and 1,500 microns. The generic type of device has a design to achieve biological fixation to bone without the use of bone cement.

Predicate Devices

• UNITED U2 Acetabular Cup and Femoral Head (K022520)
• UNITED U2 Hip System (K111546)

Reference Devices

• U2 Acetabular Cup Liner (K050262)
• U2 bipolar implant (K101670)
• Revision Stem (K062978)
• HA/Ti Plasma Spray Stem (K003237)
• Ti Porous Coated Stem (K003237)
• UTF Stem (K110245)
• Press-fit Stem (K111546)
• Cemented Stem (K111546)

Submission Summary (Full Text)

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(0) Femoral Heads, +2.5 and +7.5 mm Offset: Special 510(k)

# 510(k) Summary of Safety and Effectiveness

OCT 1 0 2012

510(k) Summary

| Submitted by: | United Orthopedic Corporation |
|-----------------------|----------------------------------------------------------------------------------------------------|
| Address: | No 57, Park Ave 2, Science Park, Hsinchu 300, Taiwan |
| Phone Number: | [phone] ext. 2212 |
| Fax Number: | [phone] |
| Date of Summary: | August 14, 2012 |
| Contact Person | Fang-Yuan Ho<br>Regulation and Document Management |
| Proprietary Name: | Femoral Heads, +2.5 and +7.5 mm Offset |
| Common Name: | Femoral Head Prosthesis |
| Device Classification | Hip joint metal/polymer/metal semi-constrained porous-coated |
| Name and Reference: | uncemented prosthesis per 21CFR 888.3358<br>This falls under the Orthopedics panel. |
| Device Class | Class II |
| Panel Code | Orthopaedics Device |
| Device Product Code: | LPH |
| Predicate Device: | 1. “UNITED” U2 Acetabular Cup and Femoral Head<br>(K022520)<br>2. “UNITED” U2 Hip System (K111546) |

#### Device Description:

This device manufactured from CoCrMo alloy (ASTM F1537) is an extension of cleared "UNITED" U2 Acetabular Cup and Femoral Head (K022520) and "UNITED" U2 Hip System (K111546). The material, design, safety and effectiveness of this subject are identical to the previously cleared femoral heads except for its offset. The previously cleared femoral head offsets for the U2 Hip System are -3, +0, +5, and +10 mm. This submission adds +7.5 and +2.5 mm offset heads for 28, 32 and 36 mm

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# (0) Femoral Heads, +2.5 and +7.5 mm Offset: Special 510(k)

diameter sizes. This device is intended to be used with the previously cleared U2 Acetabular Cup Liner (K050262), U2 XPE Liner (K111546), U2 bipolar implant (K101670), Revision Stem (K062978), HA/Ti Plasma Spray Stem (K003237), Ti Porous Coated Stem (K003237), UTF Stem (K110245), Press-fit Stem (K111546) and Cemented Stem (K111546) in corresponding size. The differences of femoral head offset do not affect the intended use of the device or alter the fundamental scientific technology of the device.

#### Indications:

This device is indicated in hip arthroplasty for reduction or relief of pain and/or improved hip function in skeletally mature patients with the following conditions:

#### For use as a Total Hip Replacement

- 1. Painful, disabling joint disease of the hip resulting from: degenerative arthritis, rheumatoid arthritis, post-traumatic arthritis or late stage avascular necrosis.
- 2. Revision of previous unsuccessful femoral head replacement, cup arthroplasty or other procedure.
- 3. Clinical management problems where arthrodesis or alternative reconstructive techniques are less likely to achieve satisfactory results.

## For use as a Bipolar Hip Replacement

- 1. Femoral head/neck fractures or non-unions.
- 2. Aseptic necrosis of the femoral head.
- 3. Osteo-, rheumatoid, and post-traumatic arthritis of the hip with minimal acetabular involvement or distortion.

Cemented stem is designed for cemented use only.

## Basis for Substantial Equivalence:

The safety and effectiveness of the subject device are substantially equivalent to the

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#### (0) Femoral Heads, +2.5 and +7.5 mm Offset: Special 510(k) 510(k) Summary

ﺎﺯ ﺍﻟ

previously cleared "UNITED" Femoral Head (K022520, K111546), except for an increasing in the offset type. The modifications do not change the indications or fundamental scientific technology.

## Performance Data:

This 510(k) submission was prepared in accordance with the Agency's, "Class II Special Controls Guidance Document- Hip Joint Metal Polymer Constrained Cemented or Uncemented Prosthesis" and "Guidance Document for Testing Non-Articulating, 'Mechanically Locked', Modular Implant Components". Femoral Head Disassembly loads for the stems, completed as part of the design assurance process. demonstrated that this device is safe and effective and is substantially equivalent to the predicate device.

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Image /page/3/Picture/0 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized eagle with three stripes forming its body and wing. The eagle is facing right. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES • USA" is arranged in a circular fashion around the eagle.

## DEPARTMENT OF HEALTH & HUMAN SERVICES

Food and Drug Administration 10903 New Hampshire Avenue Document Control Room-WO66-G609 Silver Spring, MD 20993-0002

United Orthopedic Corp. % Ms. Fang-Yuan Ho. Regulation and Document Specialist No 57. Park Ave 2 Science Park, Hsinchu 300 Taiwan

OCT 10 2012

Re: K122504

Trade/Device Name: Femoral Heads, 2.5 and 7.5mm Neck Length Regulation Number: 21 CFR 888.3358 Regulation Name: Hip joint metal/polymer/metal semi-constrained porous-coated Regulatory Class: II Product Code: LPH Dated: August 14, 2012 Received: August 16, 2012

Dear Ms. Ho:

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. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.

If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to 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); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set

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Page 2 – Ms. Fang-Yuan Ho

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. If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please go to http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled. "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to

http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.

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/MedicalDevices/Resourcesfor You/Industry/default.htm.

Sincerely vours.

years,

For

O. Mallerwan

Mark N. Melkerson Director Division of Surgical, Orthopedic and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health

Enclosure

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# Indication for Use

#### 510 (k) Number (if known): K122504

#### Device Name: _Femoral Heads, +2.5 and +7.5 mm Offset

#### Indications for Use:

This device is indicated in hip arthroplasty for reduction or relief of pain and/or improved hip function in skeletally mature patients with the following conditions:

#### For use as a Total Hip Replacement

- 1. Painful, disabling joint disease of the hip resulting from: degenerative arthritis, rheumatoid arthritis, post-traumatic arthritis or late stage avascular necrosis.
- 2. Revision of previous unsuccessful femoral head replacement, cup arthroplasty or other procedure.
- 3. Clinical management problems where arthrodesis or alternative reconstructive techniques are less likely to achieve satisfactory results.

#### For use as a Bipolar Hip Replacement

- 1. Femoral head/neck fractures or non-unions.
- 2. Aseptic necrosis of the femoral head.
- 3. Osteo-, rheumatoid, and post-traumatic arthritis of the hip with minimal acetabular involvement or distortion.

Cemented stem is designed for cemented use only.

Over-The-Counter Use Prescription Use x AND/OR (21 CFR 801 Subpart C) ` (Part 21 CFR 801 Subpart D) (PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)

As Co

Concurrence of CDRH, Office of Device Evaluation (ODE)

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(Division Sign-Oft) Division of Surgical, Orthopedic, and Restorative Devices

510(k) Number k122504