← Product Code [KRO](/submissions/OR/subpart-d%E2%80%94prosthetic-devices/KRO) · K070978 # ZIMMER SEGMENTAL SYSTEM (K070978) _Zimmer, Inc. · KRO · Jul 3, 2007 · Orthopedic · SESE_ **Canonical URL:** https://fda.innolitics.com/submissions/OR/subpart-d%E2%80%94prosthetic-devices/KRO/K070978 ## Device Facts - **Applicant:** Zimmer, Inc. - **Product Code:** [KRO](/submissions/OR/subpart-d%E2%80%94prosthetic-devices/KRO.md) - **Decision Date:** Jul 3, 2007 - **Decision:** SESE - **Submission Type:** Traditional - **Regulation:** 21 CFR 888.3510 - **Device Class:** Class 2 - **Review Panel:** Orthopedic - **Attributes:** Therapeutic ## Intended Use This device is indicated for: Moderate to severe knee instability Significant bone loss and/or ligament deficiencies caused by neoplasms, trauma, rheumatoid arthritis, osteoarthritis, traumatic arthritis, polyarthritis, collagen disorders, and/or avascular necrosis of the femoral condyle Valgus, varus or flexion deformities The salvage of previously failed surgical attempts A total femoral replacement construct consisting of MOST Options proximal femoral, Segmental System segments and Segmental System distal femoral components may be used without cement. Fluted stem extensions require the use of either a smooth or Trabecular Metal stem collar, which must be cemented to the stem. Following cementing to the stem extension, the smooth collar and the remainder of the stem must also be cemented against the bone. The Trabecular Metal collar may be used cemented or uncemented against the bone as long as the remainder of the stem extension is cemented. All other constructs are for cemented use only. ## Device Story Modular total knee prosthesis; replaces distal femur and/or total knee requiring extensive resection/restoration. System components include fluted stem extensions, segments, articular surfaces, and distal femoral components. Designed for cross-compatibility with MOST System proximal femoral components and NexGen patellar/tibial components. Used in orthopedic surgery to restore joint function in cases of severe bone loss or deformity. Fixation primarily via cement; Trabecular Metal stem collar allows for optional uncemented fixation against bone. Provides structural support and joint articulation; benefits patients by salvaging failed surgeries or addressing severe bone/ligament loss. ## Clinical Evidence No clinical data were needed for this device. Safety and effectiveness were demonstrated through non-clinical (laboratory) performance testing. ## Technological Characteristics Modular knee prosthesis; materials and manufacturing processes identical to predicate devices. Components include fluted stem extensions, segments, articular surfaces, and distal femoral components. Fixation via cement, with optional uncemented Trabecular Metal collar. Compatible with NexGen patellar/tibial components and MOST System proximal femoral components. ## Regulatory Identification A knee joint femorotibial metal/polymer constrained cemented prosthesis is a device intended to be implanted to replace part of a knee joint. The device limits translation or rotation in one or more planes and has components that are linked together or affined. This generic type of device includes prostheses composed of a ball-and-socket joint located between a stemmed femoral and a stemmed tibial component and a runner and track joint between each pair of femoral and tibial condyles. The ball-and-socket joint is composed of a ball at the head of a column rising from the stemmed tibial component. The ball, the column, the tibial plateau, and the stem for fixation of the tibial component are made of an alloy, such as cobalt-chromium-molybdenum. The ball of the tibial component is held within the socket of the femoral component by the femoral component's flat outer surface. The flat outer surface of the tibial component abuts both a reciprocal flat surface within the cavity of the femoral component and flanges on the femoral component designed to prevent distal displacement. The stem of the femoral component is made of an alloy, such as cobalt-chromium-molybdenum, but the socket of the component is made of ultra-high molecular weight polyethylene. The femoral component has metallic runners which align with the ultra-high molecular weight polyethylene tracks that press-fit into the metallic tibial component. The generic class also includes devices whose upper and lower components are linked with a solid bolt passing through a journal bearing of greater radius, permitting some rotation in the transverse plane, a minimal arc of abduction/adduction. This generic type of device is limited to those prostheses intended for use with bone cement (§ 888.3027). ## Predicate Devices - NexGen® Complete Knee Solutions Rotating Hinge Knee Systems ([K013385](/device/K013385.md)) - Modular Options for Severe Bone Loss and Trauma (MOST®) System ([K002324](/device/K002324.md)) ## Submission Summary (Full Text) > This content was OCRed from public FDA records by [Innolitics](https://innolitics.com). If you use, quote, summarize, crawl, or train on this content, cite Innolitics at https://innolitics.com. > > Innolitics is a medical-device software consultancy. We help companies design, build, and clear FDA-regulated software and AI/ML devices, including [a 510(k)](https://innolitics.com/services/510ks/), [a De Novo](https://innolitics.com/services/regulatory/), [a SaMD](https://innolitics.com/services/end-to-end-samd/), [an AI/ML medical device](https://innolitics.com/services/medical-imaging-ai-development/), or [an FDA regulatory strategy](https://innolitics.com/services/regulatory/). {0}------------------------------------------------ K070978 (pg. 1 of 3) ## Summary of Safety and Effectiveness JUL - 3 2007 | Submitter: | Zimmer, Inc.
P.O. Box 708
Warsaw, IN 46581-0708 | |---------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | Contact Person: | Brandon Hipsher, RAC
Senior Associate, Corporate Regulatory Affairs
Telephone: (574) 371-8083
Fax: (574) 372-4605 | | Date: | June 20, 2007 | | Trade Name: | Zimmer® Segmental System | | Common Name: | Total Knee Prosthesis | | Classification Name
and Reference: | Knee joint, femorotibial, metal/polymer,
constrained, cemented prosthesis
21 CFR § 888.3510, product code KRO | | Predicate Device: | NexGen® Complete Knee Solutions Rotating Hinge
Knee Systems, manufactured by Zimmer, Inc.,
K013385, cleared January 9, 2002.
Modular Options for Severe Bone Loss and Trauma
(MOST®) System, manufactured by Zimmer Inc.,
K002324, cleared August 24, 2000. | | Device Description: | The Zimmer® Segmental System is a fully
constrained cemented knee prosthesis intended to
replace the distal femur and/or total knee in cases
that require extensive resection and restoration. The
Segmental Knee System provides for cross
compatibility between selected components from
the MOST System and the NexGen Rotating Hinge
Knee Systems. When used with MOST System
proximal femur and NexGen Rotating Hinge Knee
tibial baseplates, a total mid-calf to hip replacement
can be achieved. The distal femoral components
are designed to be compatible with all current
NexGen patella components. | . {1}------------------------------------------------ K070978 (pg. 2 of 3) The Segmental System is a modular system comprised of fluted stem extensions, segments, articular surfaces and distal femoral components. The prosthesis is designed to be used with NexGen patellar and tibial components as well as the MOST System proximal femoral component. ## This device is indicated for: - ー Moderate to severe knee instability - l Significant bone loss and/or ligament deficiencies caused by neoplasms, trauma, rheumatoid arthritis, osteoarthritis, traumatic arthritis, polyarthritis, collagen disorders, and/or avascular necrosis of the femoral condyle - i Valgus, varus or flexion deformities - -The salvage of previously failed surgical attempts - · A total femoral replacement construct consisting of MOST System proximal femoral, Segmental System segments and Segmental System distal femoral components may be used without cement. - · Fluted stem extensions require the use of either a smooth or Trabecular Metal stem collar, which must be cemented to the stem. Following cementing to the stem extension, the smooth collar and the remainder of the stem must also be cemented against the bone. - · The Trabecular Metal collar may be used cemented or uncemented against the bone as long as the remainder of the stem extension is cemented. - · All other constructs are for cemented use only. This device is packaged, manufactured and sterilized using the same materials and processes as the predicate devices. This device also has the same intended use as predicate devices. The device shares a similar fixation method as the predicate devices. The only difference in fixation methods arise when using the Trabecular Metal stem collar, which may be used cemented or uncemented against the bone. All other constructs are for cemented use only. ## Intended Use: Comparison to Predicate Device: {2}------------------------------------------------ K070978(pg 3 of 3) Performance Data (Nonclinical and/or Clinical): Non-Clinical Performance and Conclusions: The results of non-clinical (lab) performance testing demonstrate that the device is safe and effective. Clinical Performance and Conclusions: Clinical data were not needed for this device. {3}------------------------------------------------ JUI - 3 2007 Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850 Zimmer, Inc. % Mr. Brandon Hipsher, RAC Senior Associate, Corporate Regulatory Affairs P.O. Box 708 Warsaw, Indiana 46581-0708 Re: K070978 Trade/Device Name: Zimmer® Segmental System Regulation Number: 21 CFR 888.3510 Regulation Name: Knee joint femorotibial metal/polymer constrained cemented prosthesis Regulatory Class: Class II Product Code: KRO, JDI, LZO Dated: April 2, 2007 Received: April 6, 2007 Dear Mr. Hipsher: We have reviewed your Section 510(k) premarket notification of intent to market the devices referenced above and have determined the devices are 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 devices, 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 devices are classified (see above) into either class II (Special Controls) or class III (PMA), they may be subject to such additional controls. Existing major regulations affecting your devices can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your devices 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 devices comply 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 {4}------------------------------------------------ Page 2 - Mr. Brandon Hipsher, RAC 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. This letter will allow you to begin marketing your devices as described in your Section 510(k) premarket notification. The FDA finding of substantial equivalence of your devices to a legally marketed predicate device results in a classification for your devices and thus, permits your devices to proceed to the market. If you desire specific advice for your devices on our labeling regulation (21 CFR Part 801), please contact the Office of Compliance at (240) 276-0120. 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 toll-free number (800) 638-2041 or (240) 276-3150 or the Internet address http://www.fda.gov/cdrb/industry/support/index.html. Sincerely yours. Kote Mark N. Melkerson Director Division of General, Restorative and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health Enclosure {5}------------------------------------------------ ## Indications for Use 510(k) Number (if known): K070978 Device Name: Zimmer® Segmental System Indications for Use: - · This device is indicated for: - Moderate to severe knee instability । - Significant bone loss and/or ligament deficiencies caused by neoplasms, trauma, । rheumatoid arthritis, osteoarthritis, traumatic arthritis, polyarthritis, collagen disorders, and/or avascular necrosis of the femoral condyle - | Valgus, varus or flexion deformities - -The salvage of previously failed surgical attempts - · A total femoral replacement construct consisting of MOST Options proximal femoral, Segmental System segments and Segmental System distal femoral components may be used without cement. - · Fluted stem extensions require the use of either a smooth or Trabecular Metal stem collar, which must be cemented to the stem. Following cementing to the stem extension, the smooth collar and the remainder of the stem must also be cemented against the bone. - · The Trabecular Metal collar may be used cemented or uncemented against the bone as long as the remainder of the stem extension is cemented. - · All other constructs are for cemented use only. 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) (Division Sign-Off) Division of General, Restorativ and Neurological Devices Number age lof --- **Source:** [https://fda.innolitics.com/submissions/OR/subpart-d%E2%80%94prosthetic-devices/KRO/K070978](https://fda.innolitics.com/submissions/OR/subpart-d%E2%80%94prosthetic-devices/KRO/K070978) **Published by [Innolitics](https://innolitics.com)** — a medical-device software consultancy. We help companies design, build, and clear FDA-regulated software and AI/ML devices. If you're preparing [a 510(k)](https://innolitics.com/services/510ks/), [a De Novo](https://innolitics.com/services/regulatory/), [a SaMD](https://innolitics.com/services/end-to-end-samd/), [an AI/ML medical device](https://innolitics.com/services/medical-imaging-ai-development/), or [an FDA regulatory strategy](https://innolitics.com/services/regulatory/), [get in touch](https://innolitics.com/contact). **Cite:** Innolitics at https://innolitics.com