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K Number
K130634
Device Name
CORIN METAFIX HIP STEM
Manufacturer
CORIN U.S.A.
Date Cleared
2013-05-24

(74 days)

Product Code
LZO,JDI,KWL,KWY
Regulation Number
888.3353
Type
Traditional
Panel
OR
Reference & Predicate Devices
K082525,K120362,K121439
AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
Intended Use

The indications for the Corin Metafix Hip Stem as a total hip arthroplasty and, when used in combination with Corin hemi-arthroplasty femoral heads, as a hemi-arthroplasty, include:

  • . Non-inflammatory degenerative joint disease including osteoarthritis and avascular necrosis
  • Rheumatoid arthritis
  • Correction of functional deformity
  • Treatment of non-union, femoral neck and trochanteric fractures of the proximal femur
  • Developmental dysplasia of the hip (DDH) or congenital dysplasia of the hip . (CDI-I)

The Corin Metafix Hip Stem is intended for cementless use only.

Device Description

The Corin Metafix Hip Stem is a titanium femoral hip stem featuring a 12/14 tapered male trunnion for assembly with modular femoral head components. The stem is manufactured from Titanium (TiAL6V4) alloy for surgical implant applications, conforming to ASTM F136-11 and is coated with plasma sprayed hydroxyapatite conforming to ASTM F-1185-03(2009). The Corin Metafix Hip Stern is available in 10 sizes marked 1 through 10. Each size is available in three offsets, including Standard (1359), Lateralized, (135°), and Standard (125°) apart from the size 1 which is available in two offsets, Standard (135°) and Lateralized (135°).

The Corin Metafix Hip Stem was originally cleared in K082525, K120362 & K121439. The purpose of this submission is to modify the labeling to include additional contraindications for the Metafix stem when used for hemi arthroplasty, for clarity to ensure safe or effective use. The indications and components for use with the Corin Metafix stem subject of this submission are identical to that of the predicate devices K082525, K120362 & K121439.

AI/ML Overview

The provided document describes a medical device, the Corin Metafix Hip Stem, and its regulatory submission (K130634). However, this document does NOT contain information about acceptance criteria, device performance, a study proving the device meets acceptance criteria, sample sizes, ground truth establishment, or human reader effectiveness with AI assistance.

This submission is a 510(k) premarket notification, which primarily focuses on demonstrating substantial equivalence to previously marketed predicate devices rather than proving the device meets specific performance criteria through new studies.

Here's how the requested information relates to the provided text:

  1. Table of acceptance criteria and reported device performance: Not provided. The document states "Non-Clinical Testing: A comparison of indications for use and contraindications demonstrate substantial equivalence" and "Clinical Testing: Clinical testing was not necessary to determine substantial equivalence between the Corin Metafix Hip Stem with modified labeling to the predicate devices." This indicates that no new performance data was generated for this specific submission to meet acceptance criteria.
  2. Sample size used for the test set and data provenance: Not applicable. No new test set or clinical study was conducted.
  3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts: Not applicable. No new test set or ground truth was established.
  4. Adjudication method for the test set: Not applicable. No new test set or adjudication was performed.
  5. If a multi-reader multi-case (MRMC) comparative effectiveness study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance: Not applicable. This device is a hip implant, not an AI-assisted diagnostic or therapeutic tool.
  6. If a standalone (i.e. algorithm only without human-in-the-loop performance) was done: Not applicable. See point 5.
  7. The type of ground truth used (expert consensus, pathology, outcomes data, etc): Not applicable. No new ground truth was established.
  8. The sample size for the training set: Not applicable. No new training set was involved in this 510(k) submission.
  9. How the ground truth for the training set was established: Not applicable.

In summary: The provided 510(k) summary (K130634) for the Corin Metafix Hip Stem is a regulatory document asserting substantial equivalence to existing devices. It explicitly states that "Clinical testing was not necessary to determine substantial equivalence." Therefore, it does not contain the information requested about acceptance criteria, device performance studies, sample sizes, ground truth, or AI-related metrics.

§ 888.3353 Hip joint metal/ceramic/polymer semi-constrained cemented or nonporous uncemented prosthesis.

(a)
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.(b)
Classification. Class II.