STABILITY HIP STEM WITH POROCOAT

K934457 · Depuy, Inc. · LZO · Jul 6, 1994 · Orthopedic

Device Facts

Record IDK934457
Device NameSTABILITY HIP STEM WITH POROCOAT
ApplicantDepuy, Inc.
Product CodeLZO · Orthopedic
Decision DateJul 6, 1994
DecisionSESE
Submission TypeTraditional
Regulation21 CFR 888.3353
Device ClassClass 2
AttributesTherapeutic

Indications for Use

The Stability Hip Prosthesis is indicated for uncemented use as the femoral component in total hip arthroplasty for replacing the hip joint of patients whose hip joint has been damaged by degenerative joint disease, fracture, or the failure of a previous arthroplasty. The articular surface of the prosthesis is provided by the attachment of a modular femoral head of cobalt-chromium-molybdenum alloy (Orthochrome) or aluminum oxide ceramic (Biolox) for use in total hip replacement with a porous coated metal-backed acetabular component with a bearing surface made of ultra high molecular weight polyethylene. Fixation of the Stability Hip to the skeleton is intended to be by uncemented, biological fixation by tissue ingrowth into the porous coating.

Device Story

Stability Hip Stem with Porocoat is a femoral hip prosthesis for total hip arthroplasty; designed for uncemented, biological fixation via tissue ingrowth. Device features proximal porous coating (commercially pure titanium beads) and circumferential ridges; distal stem includes coronal slot for flexibility and flutes for rotational stability. Employs self-locking taper for attachment of modular femoral heads (cobalt-chromium-molybdenum or aluminum oxide ceramic). Used by orthopedic surgeons in clinical settings. Output is a structural replacement for the femoral component of the hip joint; clinical decision-making involves selecting appropriate modular head and acetabular components to restore joint function. Benefits include joint replacement for patients with degenerative disease, fracture, or failed prior arthroplasty.

Clinical Evidence

No clinical data provided. Substantial equivalence is based on design, material, and intended use comparisons to predicate devices.

Technological Characteristics

Femoral hip prosthesis; proximal body porous coated with commercially pure titanium beads; distal stem features coronal slot and flutes. Modular femoral head attachment via self-locking taper. Materials include titanium alloy stem; modular heads of cobalt-chromium-molybdenum or aluminum oxide ceramic. Uncemented fixation via biological tissue ingrowth.

Indications for Use

Indicated for patients requiring total hip arthroplasty due to degenerative joint disease, fracture, or failure of previous arthroplasty. Intended for uncemented, biological fixation via tissue ingrowth.

Regulatory Classification

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.

Predicate Devices

Reference Devices

Submission Summary (Full Text)

{0} [LOGO] DEPARTMENT OF HEALTH & HUMAN SERVICES Public Health Service JUL 6 1994 Food and Drug Administration 1390 Piccard Drive Rockville MD 20850 Mr. David A. Kotkovetz Coordinator, Regulatory Affairs DePuy Inc. PO Box 988 700 Orthopaedic Drive Warsaw, Indiana 46581-0988 Re: K934457 Stability Hip Stem with Porocoat® Regulatory Class: II Product Code: LZO Dated: September 10, 1993 Received: September 13, 1993 Dear Mr. Kotkovetz: 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 to devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments. This decision is based on consideration of the specific design of stem, data provided for the reclassified Biolox Ball manufactured by Cersiv (formerly Feldmuhle Aktiengesellschaft), and data provided for the Biolox 2 Ball contained in the identified premarket notification. You may, therefore, market the device, subject to the general controls provisions of the Federal Food, Drug, and Cosmetic Act (Act) and the following limitation: The stem is labeled for use only with the Biolox 2 Balls having the following Cerasiv Model numbers: a. 38.39.7105.015.0.9 b. 38.39.7105.025.0.2 c. 38.39.7105.195.0.2 d. 38.39.7105.205.0.4 e. 38.39.7105.215.0.8 The general controls provisions of the Act include requirements for registration, listing of devices, good manufacturing practice, and labeling, and prohibitions against misbranding and adulteration. You may market your device under the above limitations as class II devices. These devices would be considered not substantially equivalent to a legally marketed predicate {1} Page 2 - Mr. David A. Kotkovetz device if labeled with other intended uses and/or claims of safety or effectiveness. Any other intended uses or claims may cause the device to be classified into Class III under Section 513(f) of the Act. Class III devices are required to have an approved premarket approval (PMA) application prior to marketing. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. In addition, the Food and Drug Administration (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 the Radiation Control for Health and Safety Act of 1968, or other Federal Laws or Regulations. This letter immediately will allow you to begin marketing your device as described. An FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and permits your device to proceed to the market, but it does not mean that FDA approves your device. Therefore, you may not promote or in any way represent your device or its labeling as being approved by FDA. If you desire specific advice on the labeling for your device please contact the Office of Compliance, Promotion and Advertising Policy Staff (HFZ-300) at (301) 594-4639. Other general information on your responsibilities under the Act, may be obtained from the Division of Small Manufacturers Assistance at their toll free number (800) 638-2041 or at (301) 443-6597. Paul R. Beninger, M.D. Director Division of General and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health ![img-0.jpeg](img-0.jpeg) {2} # X. 510(k) SUMMARY OF SAFETY AND EFFECTIVENESS SAFE MEDICAL DEVICES ACT OF 1990 510(k) Summary NAME OF FIRM: DePuy Inc. 700 Orthopaedic Drive Warsaw, Indiana 46581-0988 510(K) FIRM CONTACT: David A. Kotkovetz Coordinator, Regulatory Affairs TRADE NAME: Stability Hip Stem with Porocoat® COMMON NAME: Femoral Prosthesis CLASSIFICATION: 888.3360 Prosthesis, Hip, Femoral Component Uncemented, Metal DEVICE PRODUCT CODE: Product code: 87KWL SUBSTANTIALLY EQUIVALENT DEVICES: - Stability Hip Stem with Porocoat - DePuy - AML Porocoat Femoral Stem - DePuy DEVICE DESCRIPTION AND INTENDED USE: The Stability Hip Stem with Porocoat porous coating is a femoral hip prosthesis. Each stem has a self-locking taper which allows for the use of interchangeable modular femoral heads. The proximal body is porous coated (Porocoat) with commercially pure titanium beads and includes numerous circumferential ridges. A coronal slot in the distal stem allows the distal portion of the implant to flex slightly with the femur. The distal stem also includes flutes, intended to provide rotational stability. C00016 40 {3} The Stability Hip Prosthesis is indicated for uncemented use as the femoral component in total hip arthroplasty for replacing the hip joint of patients whose hip joint has been damaged by degenerative joint disease, fracture, or the failure of a previous arthroplasty. The articular surface of the prosthesis is provided by the attachment of a modular femoral head of cobalt-chromium-molybdenum alloy (Orthochrome) or aluminum oxide ceramic (Biolox) for use in total hip replacement with a porous coated metal-backed acetabular component with a bearing surface made of ultra high molecular weight polyethylene. Fixation of the Stability Hip to the skeleton is intended to be by uncemented, biological fixation by tissue ingrowth into the porous coating. # BASIS OF SUBSTANTIAL EQUIVALENCE: The DePuy Stability Hip Stem with Porocoat for uncemented application is substantially equivalent (i.e., identical) to the Stability Hip Stem with Porocoat for cemented application (K915787) in design and material. Both include a porous coating on the proximal body. The material of the DePuy Stability Hip Stem with Porocoat remains unchanged. The proximal region of the Stability Hip Stem with Porocoat includes numerous circumferential ridges which remain unchanged. The distal stem of the Stability Hip Stem with Porocoat is fluted and slotted and remains unchanged. The intended use for the Stability Hip Stem with Porocoat in the K915787 submission is for cemented application; whereas, the intended use of the Stability Hip Stem with Porocoat in this submission is for uncemented (i.e., press-fit applications). The DePuy Stability Hip Stem with Porocoat for uncemented application is substantially equivalent to the AML Porocoat Femoral Stem in intended use. Both stems are intended to be used in C00017 {4} uncemented (i.e, press-fit) applications. Both stems are porous coated (Porocoat) to enhance the strength of the bone/prosthesis interface. The porous coated surface is proximally located on the Stability Hip Stem and includes numerous circumferential ridges; whereas, the porous coated surface on the AML Hip covers the entire stem except the distal 5cm and does not have proximally located ridges. The Stability Hip distal stem is fluted and slotted; whereas, the AML distal stem is not fluted or slotted. The material of the Stability Hip Stem is a titanium alloy; whereas, the AML Hip Stem is a cobalt-chrome alloy. The articular surface of both stems is provided by the attachment of a modular femoral head. The Stability Hip Stem does not have a calcar collar; whereas, the AML Hip Stem has a calcar collar. Note: The AML Porocoat Femoral Stem approved for uncemented application is now a Regulatory Class II device pursuant to the reclassification order issued by the FDA and effective February 21, 1992. C00018
Innolitics
Guidance Recalls

Panel 1

/
Ready

Predicate graph will load when search results are available.

Embedding visualization will load when search results are available.

PDF viewer will load when search results are available.

Loading panels...

Select an item from Submissions

Click any panel, subpart, regulation, product code, or device to see details here.

Section Matches

Results will appear here.

Product Code Matches

Results will appear here.

Special Control Matches

Results will appear here.

Loading collections...