The Hyalex Early Feasibility Study (EFS)

NCT ID: NCT06368700

Last Updated: 2025-01-15

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-04-04

Study Completion Date

2026-10-31

Brief Summary

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The Hyalex Early Feasibility Study is a prospective, multicenter, open-label, single-arm, 2-phase early feasibility study to evaluate the safety and technical performance of the HYALEX Knee Cartilage System for replacement of loss of articular cartilage and bone of the knee femoral condyles in symptomatic patients who require surgical treatment, will be enrolled in the study and undergo implantation of the HYALEX Knee Implant.

Detailed Description

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Conditions

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Cartilage Injury Cartilage Damage

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

DEVICE_FEASIBILITY

Blinding Strategy

NONE

Study Groups

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Hyalex Knee Cartilage System

Implantation of the Hyalex Knee Cartilage Implant

Group Type EXPERIMENTAL

Hyalex Knee Cartilage System

Intervention Type DEVICE

Surgical implantation of the Hyalex Knee Cartilage System

Interventions

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Hyalex Knee Cartilage System

Surgical implantation of the Hyalex Knee Cartilage System

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

1. 21-70 years.
2. Body Mass Index (BMI) ≤ 38.
3. Singular treatable joint surface lesion, ICRS Grade 3 or 4, located on the medial or lateral femoral condyle.
4. One implant to treat a single symptomatic lesion with up to 3.8cm2 total lesion area.
5. Knee Injury and Osteoarthritis Outcome Score (KOOS) pain subscale score between 20 and 65.
6. Stable knee.
7. Failure of non-operative treatment (e.g., physical therapy, physician-directed at home exercise program, intra-articular injections, bracing) for at least 4 weeks prior to consideration for participation in the study.


1. 21-70 years.
2. Body Mass Index (BMI) ≤ 38.
3. Up to three treatable joint surface lesion(s), ICRS Grade 3 or 4, located on the medial or lateral femoral condyle(s).
4. Up to 3 implants to treat up to 3 individual symptomatic lesions with a total summative area up to 10cm2.
5. Knee Injury and Osteoarthritis Outcome Score (KOOS) pain subscale score between 20 and 65.
6. Stable knee.
7. Failure of non-operative treatment (e.g., physical therapy, physician-directed at home exercise program, intra-articular injections, bracing) for at least 4 weeks prior to consideration for participation in the study.

Exclusion Criteria

HYALEX Implant, Surgical Technique, and Lesion Site Exclusions:

1. Known allergy to polyurethanes, bone cement, acrylic, or titanium.
2. Lack of 2mm of healthy cartilage (ICRS Grade 0 to 2) and 2mm of vital bone wall on all sides of the implant site.
3. Osteochondral defect affecting subchondral bone more than 11mm in depth from adjacent non-defect articular surface.
4. Bipolar cartilage lesions involving patellar or tibial lesions ICRS Grade 3 - 4 opposite the lesion intended for treatment.
5. Insufficient bone stock or bone density determined intra-operatively preventing implant press fit.

Patient Orthopaedic Health Exclusions:

1. Kellgren and Lawrence (KL) grade 3 or 4 on standing radiographs.
2. Hip-knee-ankle (HKA) angle of greater than +/- 8 degrees (varus or valgus malalignment \> 8 degrees) on standing X-ray.
3. Lack of normally functioning contralateral knee that restricts activity.
4. Insufficiency fracture of the femoral condyle or tibial plateau.
5. Recent Osteochondritis Dissecans within 1 year.
6. Diagnosis of a concomitant knee injury which the investigator believes may interfere with study participation or confound effectiveness assessment.
7. Untreated ACL and/or PCL deficiency or complex ligamentous instability of the study knee according to IKDC Grade C (abnormal) or D (severely abnormal).

Previous Surgery and Intervention Exclusions:

1. Previous surgical cartilage treatment in the index knee within the last 6 months
2. Previous intra-articular injections, including HA and steroids, within the last 3 months prior to the date of surgery.

Patient Overall Health and Health History Exclusions:

1. Any known history of inflammatory arthropathy or crystal-deposition arthropathy.
2. Current cigarette smoker or user of other nicotine products.
3. Known Type 1 or Type 2 insulin-dependent diabetes mellitus.
4. Currently undergoing immunosuppressive therapy or long-term steroid use (corticosteroid, excluding inhalers) or within 3 months prior to surgery.
Minimum Eligible Age

21 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Hyalex Orthopaedics, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Horizon Clinical Research

La Mesa, California, United States

Site Status RECRUITING

Ochsner Sports Medicine Institute

New Orleans, Louisiana, United States

Site Status RECRUITING

Hospital for Special Surgery

New York, New York, United States

Site Status RECRUITING

Oregon Health & Science University

Portland, Oregon, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Chris Cain

Role: CONTACT

408-439-5154

Facility Contacts

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Dino Subasic

Role: primary

(619) 456-6012 ext. 1

Scott Hacker, M.D.

Role: backup

Joseph Laurent

Role: primary

(504) 842-0263

Deryk Jones, M.D.

Role: backup

Ava Neijna

Role: primary

917-260-3677

Sabrina Strickland, M.D.

Role: backup

Andreas Gomoll, M.D.

Role: backup

Jessica Ballin

Role: primary

503-418-9580

Dennis Crawford, M.D.

Role: backup

Other Identifiers

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CL-00001

Identifier Type: -

Identifier Source: org_study_id

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