Arthrosurface WristMotion Total Wrist Arthroplasty System

K200718 · Arthrosurface, Inc. · JWJ · Oct 15, 2020 · Orthopedic

Device Facts

• Record ID: K200718
• Device Name: Arthrosurface WristMotion Total Wrist Arthroplasty System
• Applicant: Arthrosurface, Inc.
• Product Code: JWJ · Orthopedic
• Decision Date: Oct 15, 2020
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 888.3800
• Device Class: Class 2
• Attributes: Therapeutic

Intended Use

The Arthrosurface Total Wrist Arthroplasty System is indicated for replacement of the painful wrist joint due to rheumatoid arthritis, oseto-arthritis, or post-traumatic arthritis. The device is a single-use implant intended to be used with bone cement.

Device Story

Modular joint restoration system for radiocarpal joint replacement; replaces distal radius and proximal row of carpal bones. Radial assembly includes metallic stemmed tray and UHMWPE articular component; carpal assembly includes taper post, carpal plate, articular component, and two auxiliary bone screws. Used in surgical settings by orthopedic surgeons to alleviate pain and restore wrist functionality/mobility. Implanted using bone cement. System provides mechanical articulation to replace diseased joint surfaces.

Clinical Evidence

Bench testing only. Performed mechanical testing including bone screw insertion/removal, torsion to failure, axial pullout, assembly/disassembly, resistance to torque, static and cyclic edge testing, fretting corrosion, constraint (subluxation) testing, and comparative engineering analyses (ROM, contact area). Biocompatibility supported by Kinetic Chromogenic LAL testing meeting USP and AAMI ST72 standards.

Technological Characteristics

Modular wrist prosthesis. Materials: Metal and UHMWPE. Fixation: Cemented radial stem and central carpal fixation with two auxiliary bone screws. Design: Semi-constrained, 3-part metal-plastic-metal articulation. Sterilization: Not specified. Connectivity: None (mechanical implant).

Indications for Use

Indicated for patients requiring replacement of a painful wrist joint due to rheumatoid arthritis, osteoarthritis, or post-traumatic arthritis.

Regulatory Classification

Identification

A wrist joint metal/polymer semi-constrained cemented prosthesis is a device intended to be implanted to replace a wrist 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 either a one-part radial component made of alloys, such as cobalt-chromium-molybdenum, with an ultra-high molecular weight polyethylene bearing surface, or a two-part radial component made of alloys and an ultra-high molecular weight polyethylene ball that is mounted on the radial component with a trunnion bearing. The metallic portion of the two-part radial component is inserted into the radius. These devices have a metacarpal component(s) made of alloys, such as cobalt-chromium-molybdenum. This generic type of device is limited to those prostheses intended for use with bone cement (§ 888.3027).

Predicate Devices

• Avanta Orthopaedics Inc. Total Wrist (K021859)

Reference Devices

• Biomet Maestro Total Wrist System (K042032)
• Arthrosurface HemiCAP Wrist (K141920)

Submission Summary (Full Text)

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October 15, 2020

Arthrosurface, Inc. Dawn Wilson VP, Quality & Regulatory 28 Forge Parkway Franklin, Massachusetts 02038

# Re: K200718

Trade/Device Name: Arthrosurface WristMotion Total Wrist Arthroplasty System Regulation Number: 21 CFR 888.3800 Regulation Name: Wrist Joint Metal/Polymer Semi-Constrained Cemented Prosthesis Regulatory Class: Class II Product Code: JWJ Dated: September 11, 2020 Received: September 14, 2020

## Dear Dawn Wilson:

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. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. 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

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801); medical device reporting of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4. Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.

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 https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.

For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email ([e-mail]) or phone [phone] or 301-796-7100).

Sincerely,

Vesa Vuniqi Assistant Director DHT6A: Division of Joint Arthroplasty Devices OHT6: Office of Orthopedic Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health

Enclosure

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# Indications for Use

510(k) Number (if known) K200718

Device Name

Arthrosurface Total Wrist Arthroplasty System

Indications for Use (Describe)

The Arthrosurface Total Wrist Arthroplasty System is indicated for replacement of the painful wrist joint due to rheumatoid arthritis, oseto-arthritis, or post-traumatic arthritis.

The device is a single-use implant intended to be used with bone cement.

Type of Use (Select one or both, as applicable)

| <div> <span> <span style="font-size:16px">☑</span> Prescription Use (Part 21 CFR 801 Subpart D) </span> </div> |
|-------------------------------------------------------------------------------------------------------------------|
| <div> <span> <span style="font-size:16px">☐</span> Over-The-Counter Use (21 CFR 801 Subpart C) </span> </div> |

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## 510(k) Summary

| 510(k) Owner: | Arthrosurface<br>28 Forge Parkway<br>Franklin, MA 02038<br>Tel: [phone]<br>Fax: [phone] |
|-------------------------------------------------|---------------------------------------------------------------------------------------------------|
| Contact: | Dawn Wilson<br>VP, Quality & Regulatory |
| Date of Preparation: | March 17, 2020 |
| Trade Name: | Arthrosurface WristMotion™ Wrist Arthroplasty System |
| Common Name: | Total Wrist Arthroplasty System |
| Device: | Prosthesis, Wrist, 3 Part Metal-Plastic-Metal Articulation Semi-Constrained |
| Classification Regulation: | Wrist joint metal/polymer semi-constrained cemented<br>prosthesis |
| Device Class:<br>Review Panel:<br>Product Code: | Class II<br>Orthopedic<br>JWJ |

### Device Description

The Arthrosurface Total Wrist Arthroplasty (TWA) System is a modular joint restoration system that consists of both a radial implant assembly and carpal implant assembly. The radial implant assembly is comprised of a metallic stemmed tray component and Ultra-High-Molecular-Weight-Polyethylene (UHMWPE) articular component. The carpal implant assembly consists of a taper post component, a carpal plate, an articular component and two auxiliary bone screw components, all of which are metallic. The system is designed to replace the radiocarpal joint (distal radius and proximal row of carpal bones) and is intended to alleviate pain while restoring functionality and mobility of the joint.

### Indications for Use

The Arthrosurface Total Wrist Arthroplasty System Indicated for replacement of the painful wrist joint due to rheumatoid arthritis, osteoarthritis, or post-traumatic arthritis.

The device is a single-use implant intended to be used with bone cement.

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## Substantial Equivalence

Arthrosurface has demonstrated that for the purposes of the FDA's regulation of medical devices, the Arthrosurface Total Wrist Arthroplasty System is substantially equivalent in indications for use and design principles to the following predicate devices, which have been previously cleared by the FDA:

| Primary Predicate | Avanta Orthopaedics Inc. Total Wrist (K021859)<br>Now Stryker ReMotion |
|-----------------------------|--------------------------------------------------------------------------------------|
| Reference Predicate Devices | Biomet Maestro Total Wrist System (K042032)<br>Arthrosurface HemiCAP Wrist (K141920) |

The fundamental scientific technology of the proposed device has not changed relative to the predicate device.

- Total arthroplasty implant for the wrist joint ●
- Same indications for use
- Same implant materials
- Same radial stem fixation and central carpal fixation with 2 auxiliary screws

## Support

In support of this submission, the following non-clinical tests and/or analysis were performed for the Subject Device:

- Bone Screws – insertion & removal, torsion to failure, axial pullout
- Assembly / Disassembly
- Resistance to Torque
- Static & Cyclic Edge Testing
- Fretting Corrosion
- Constraint testing (Subluxation)
- Comparative Engineering Analyses (ROM, Contact Area etc.)
- . A Kinetic Chromogenic LAL Test for Devices which meets the standard limit of 0.5 EU/mL or 20 EU/ Device per United States Pharmacopeia (USP) Chapter Bacterial Endoxins Test, USP Chapter Transfusion and Infusion Assemblies and Similar Medical Devices, and AAMI ST72:2002/R2010, Bacterial Endotoxins-Test Methodologies, Routine Monitoring, and Alternatives to Batch Testing.

## Conclusion

The results have demonstrated the safety and effectiveness of the Arthrosurface Total Wrist Arthroplasty System along with substantial equivalence to the predicate devices.