U2 Total Knee System E-XPE products

K161705 · United Orthopedic Corporation · JWH · Mar 16, 2017 · Orthopedic

Device Facts

• Record ID: K161705
• Device Name: U2 Total Knee System E-XPE products
• Applicant: United Orthopedic Corporation
• Product Code: JWH · Orthopedic
• Decision Date: Mar 16, 2017
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 888.3560
• Device Class: Class 2
• Attributes: Therapeutic

Intended Use

For E-XPE Insert (CR, PS and UC type) and Patella: The device is indicated in knee arthroplasty for reduction or relief of pain and/or improved knee function in skeletally mature patients with severe knee pain and disability due to rheumatoid arthritis, primary and secondary traumatic arthritis, polyarthritis, collagen disorders, avascular necrosis of the femoral condyle or pseudogout, posttraumatic loss of joint configuration, particularly when there is patellofemoral erosion, dysfunction or prior patellectorny, moderate valgus, varus, or flexion deformities. This device may also be indicated in the salvage of previously failed surgical attempts if the knee can be satisfactorily balanced and stabilized at the time of surgery. This device is a single use implant and intended for cemented use only. For E-XPE Insert (PSA type) This device is indicated in knee arthroplasty for reduction or relief of pain and/or improved knee function in skeletally mature patients with severe knee pain and disability due to rheumatoid arthritis, primary and secondary traumatic arthritis, polyarthritis, collagen disorders, avascular necrosis of the femoral condyle or pseudogout, posttraumatic loss of joint configuration, particularly when there is patellofemoral erosion, dysfunction or prior patellectomy, moderate valgus, varus, or flexion contraction. This device is intended for use in patients who require augmentation and/or stem extensions due to inadequate bone stock and/or require constrained stabilization for tibiofemoral joint due to soft tissue imbalance. This device is a single use implant and intended use only.

Device Story

U2 Total Knee System E-XPE Products are orthopedic implants consisting of tibial inserts (CR, PS, UC, PSA types) and patella components. Designed for cemented use in total knee arthroplasty; intended to replace damaged joint surfaces to reduce pain and restore function. Implants are manufactured from E-XPE material. Used by orthopedic surgeons in clinical settings. Output is a physical joint replacement; clinical decision-making relies on surgeon assessment of patient bone stock, joint stability, and soft tissue balance. Benefits include improved mobility and pain relief for patients with severe knee pathology.

Clinical Evidence

No clinical data provided. Substantial equivalence based on non-clinical bench testing, including tibiofemoral range of motion analysis, contact area/pressure testing, joint constraint, locking strength, wear simulation, fatigue testing of tibial insert spine, and mechanical property testing of E-XPE material. Bacterial endotoxin testing met USP <161> limits.

Technological Characteristics

Total knee prosthesis components (tibial inserts and patella) made of E-XPE material. Semi-constrained cemented design. Evaluated for mechanical properties, wear, and fatigue. Complies with Class II Special Controls Guidance for Knee Joint Patellofemorotibial and Femorotibial Metal/Polymer Porous-Coated Uncemented Prostheses.

Indications for Use

Indicated for skeletally mature patients requiring knee arthroplasty for pain relief or improved function due to rheumatoid arthritis, osteoarthritis, traumatic arthritis, polyarthritis, collagen disorders, avascular necrosis, or posttraumatic joint loss. PSA type indicated for patients requiring augmentation/stem extensions for inadequate bone stock or constrained stabilization for soft tissue imbalance.

Regulatory Classification

Identification

A knee joint patellofemorotibial polymer/metal/polymer semi-constrained cemented 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 includes prostheses that have a femoral component made of alloys, such as cobalt-chromium-molybdenum, and a tibial component or components and a retropatellar resurfacing component made of ultra-high molecular weight polyethylene. This generic type of device is limited to those prostheses intended for use with bone cement (§ 888.3027).

Predicate Devices

• U2 Total Knee System- Insert and Patella (K051640, K103733, K131864, K132752 and K150829)
• U2 Total Knee System-PSA Type (K082424)
• A200 Knee System (K120038)
• PFC Sigma Knee System (K943462, K961685)
• Vanguard DCM Conventional Tibial Bearings (K113550)

Submission Summary (Full Text)

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Image /page/0/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 a stylized image of three human profiles facing to the right, stacked on top of each other.

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

March 16, 2017

United Orthopedic Corporation Karen Ho Regulatory Affairs Manager No 57, Park Ave 2 Science Park Hsinchu, 300 TW

Re: K161705 Trade/Device Name: U2 Total Knee System E-XPE Products Regulation Number: 21 CFR 888.3560 Regulation Name: Knee joint patellofemorotibial polymer/metal/polymer semi-constrained cemented prosthesis Regulatory Class: Class II Product Code: JWH, OIY, MBH Dated: February 9, 2017 Received: February 13, 2017

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 devicerelated adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in

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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.

If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education at its toll-free number [phone] or [phone] or at its Internet address

http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 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 Industry and Consumer Education at its toll-free number [phone] or [phone] or at its Internet address

http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.

Sincerely,

# Lori A. Wiggins -S

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

Enclosure

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DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration

## Indications for Use

510(k) Number (if known) K161705

#### Device Name

U2 Total Knee System E-XPE Products

#### Indications for Use (Describe)

#### For E-XPE Insert (CR, PS and UC type) and Patella:

The device is indicated in knee arthroplasty for reduction or relief of pain and/or improved knee function in skeletally mature patients with severe knee pain and disability due to rheumatoid arthritis, primary and secondary traumatic arthritis, polyarthritis, collagen disorders, avascular necrosis of the femoral condyle or pseudogout, posttraumatic loss of joint configuration, particularly when there is patellofemoral erosion, dysfunction or prior patellectorny, moderate valgus, varus, or flexion deformities. This device may also be indicated in the salvage of previously failed surgical attempts if the knee can be satisfactorily balanced and stabilized at the time of surgery. This device is a single use implant and intended for cemented use only.

#### For E-XPE Insert (PSA type)

Type of Use (Select one or hoth, as annlicable)

This device is indicated in knee arthroplasty for reduction or relief of pain and/or improved knee function in skeletally mature patients with severe knee pain and disability due to rheumatoid arthritis, primary and secondary traumatic arthritis, polyarthritis, collagen disorders, avascular necrosis of the femoral condyle or pseudogout, posttraumatic loss of joint configuration, particularly when there is patellofemoral erosion, dysfunction or prior patellectomy, moderate valgus, varus, or flexion contraction. This device is intended for use in patients who require augmentation and/or stem extensions due to inadequate bone stock and/or require constrained stabilization for tibiofemoral joint due to soft tissue imbalance. This device is a single use implant and intended use only.

| | <span> <span style="text-decoration: overline;">Prescription Use (Part 21 CFR 801 Subpart D)</span> </span> | <span>Over-The-Counter Use (21 CFR 801 Subpart C)</span> |
|--|-------------------------------------------------------------------------------------------------------------|----------------------------------------------------------|
|--|-------------------------------------------------------------------------------------------------------------|----------------------------------------------------------|

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510(k) Summary

# 510(k) Summary of Safety and Effectiveness

## Submitter Information

| Name | United Orthopedic Corporation | |
|-------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--|
| Address | No 57, Park Ave 2, Science Park, Hsinchu 300, Taiwan | |
| Phone Number | [phone] ext. 2212 | |
| Fax Number | [phone] | |
| Name of Contact Person | Karen Ho | |
| | Regulation and Document Management | |
| Date prepared | June 15, 2016 | |
| Name of Device | | |
| Trade Name | U2 Total Knee System E-XPE Products | |
| Common Name | Total Knee Prosthesis | |
| Regulation Name and<br>Number | "Knee joint patellofemorotibial polymer/metal/polymer<br>semi-constrained cemented prosthesis." under 21CFR §888.<br>3560<br>"Knee joint patellofemorotibial metal/polymer porous-coated<br>uncemented prosthesis." under 21CFR §888. 3565 | |
| Device Class | Class II | |
| Classification Panel | Orthopaedics | |
| Product Code | JWH, OIY, MBH | |
| Predicate Device | 1. U2 Total Knee System- Insert and Patella (K051640,<br>K103733, K131864, K132752 and K150829), United<br>Orthopedic Corporation. | |
| | 2. U2 Total Knee System-PSA Type (K082424), United<br>Orthopedic Corporation. | |
| | 3. A200 Knee System (K120038), Renovis Surgical<br>Technologies. | |
| | 4. PFC Sigma" Knee System (K943462, K961685), Depuy | |
| | 5. Vanguard DCM Convetional Tibial Bearings (K113550),<br>Biomet | |

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#### Device Description:

The subjected device includes E-XPE Tibial insert (CR, PS, UC and PSA type) and E-XPE Patella. It is an extension to the previously cleared "UNITED" U2 Total Knee System (K082424, K103733, K131864, K132752 and K150829). The design rationale and indication for use are identical to the previously cleared "UNITED" U2 Total Knee System.

#### Indications for Use:

### For E-XPE Insert (CR, PS and UC type) and Patella:

The device is indicated in knee arthroplasty for reduction or relief of pain and/or improved knee function in skeletally mature patients with severe knee pain and disability due to rheumatoid arthritis, osteoarthritis, primary and secondary traumatic arthritis, polyarthritis, collagen disorders, avascular necrosis of the femoral condyle or pseudogout, posttraumatic loss of joint configuration, particularly when there is patellofemoral erosion, dysfunction or prior patellectomy, moderate valgus, varus, or flexion deformities. This device may also be indicated in the salvage of previously failed surgical attempts if the knee can be satisfactorily balanced and stabilized at the time of surgery. This device is a single use implant and intended for cemented use only.

#### For E-XPE Insert (PSA type)

This device is indicated in knee arthroplasty for reduction or relief of pain and/or improved knee function in skeletally mature patients with severe knee pain and disability due to rheumatoid arthritis, osteoarthritis, primary and secondary traumatic arthritis, polyarthritis, collagen disorders, avascular necrosis of the femoral condyle or pseudogout, posttraumatic loss of joint configuration, particularly when there is patellofemoral erosion, dysfunction or prior patellectomy, moderate valgus, varus, or flexion contraction. This device is intended for use in patients who require augmentation and/or stem extensions due to

Page: 7-2/4

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### 510(k) Summary

inadequate bone stock and/or require constrained stabilization for tibiofemoral joint due to soft tissue imbalance. This device is a single use implant and intended for cemented use only.

### Comparison to Predicate Device:

The design rationale and indication for use are identical to the previously cleared "UNITED" U2 Total Knee System (K082424, K103733, K131864, K132752 and K150829). The E-XPE material is substantially equivalent to "Renovis Surgical Technologies" A200 Knee System (K120038). The using instruments are also identical to the predicate devices.

The differences between the subject and the predicate devices are size distribution, device dimension and material. The performance evaluation of the subject device was conducted and would not post issues about safety and effectiveness. Thus, we believe that the subjected device is substantially equivalent to predicate devices.

### Performance Data:

## ● Non-clinical Performance

This 510(k) submission was prepared in accordance with the Agency's, " Class II Special Controls Guidance Document: Knee Joint Patellofemorotibial and Femorotibial Metal/Polymer Porous-Coated Uncemented Prostheses; Guidance for Industry and FDA". Tests as follows were conducted to evaluate the safety and effectiveness of the subjected device, and the test results demonstrated that this device is safe and effective.

- Tibiofemoral Range of Motion (ROM) Analysis a.
- Contact Area and Contact Pressure on Femorotibial Joint b.
- Constraint of Femoroltibial Joint c.
- Locking Strength of Tibial Insert d.
- Wear Simulation Test e.
- Fatigue Test of Tibial Insert Spine ি

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## 510(k) Summary

Mechanical Properties of E-XPE Material g.

Bacterial endotoxin testing was conducted and met the endotoxin limit as specified in USP <161>.

## ● Clinical Performance Data/Information

None provided as a basis for substantial equivalence.