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Active, not recruitingNCT04770870Updated Jun 22, 2026

Post Approval Study2: Hintermann Series H3 Total Ankle Replacement System

An interventional study of Hintermann Series H3 Total Ankle Replacement System in Osteoarthritis Ankle, Post-Traumatic Osteoarthritis of Ankle and Osteoarthritis of Ankle Secondary to Inflammatory Arthritis (Disorder), sponsored by DT MedTech, LLC. Active, not recruiting at 11 sites in United States. Open to participants aged 21 Years and older. Per ClinicalTrials.gov, last updated 2026-06-22.

Sponsored by DT MedTech, LLC · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
94
Allocation
Not applicable
Ages
21 Years and older
Sex
All
01

Study summary

The H3 TAR Prosthesis was approved by FDA (P160036) on June 4, 2019. Continued approval of the premarket approval application (PMA) is contingent upon the submission of periodic reports (Annual Report), required under 21 CFR 814.84. In order to provide continued reasonable assurance of the safety and effectiveness of the PMA device, data from this post-approval study must be submitted to FDA in a PMA Post-Approval Study Report per the requirements set forth in the approval.

Read the detailed description

The Hintermann Series H3® (H3) prosthesis is a mobile bearing total ankle replacement (TAR) indicated for use as a non-cemented implant to replace a painful arthritic ankle joint due to primary osteoarthritis, post-traumatic osteoarthritis or arthritis secondary to inflammatory disease (e.g., rheumatoid arthritis, hemochromatosis, etc.).

The present version (third generation) of the H3 TAR and the earlier generations of this total ankle system have been marketed (initially in 2003) under a license agreement in Europe, South Korea, Australia, and Canada and other countries outside the U.S. (OUS). The H3 TAR prosthesis has been used in over 20,000 procedures in the markets OUS. The H3 TAR device has not been withdrawn from marketing for any reason.

The H3 TAR Prosthesis was approved by FDA (P160036) on June 4, 2019. Continued approval of the premarket approval application (PMA) is contingent upon the submission of periodic reports (Annual Report), required under 21 CFR 814.84. In order to provide continued reasonable assurance of the safety and effectiveness of the PMA device, data from this post-approval study must be submitted to FDA in a PMA Post-Approval Study Report per the requirements set forth in the approval.

02

Conditions studied

  • Osteoarthritis Ankle
  • Post-Traumatic Osteoarthritis of Ankle
  • Osteoarthritis of Ankle Secondary to Inflammatory Arthritis (Disorder)
03

In context

Lead sponsor

DT MedTech, LLC is the lead sponsor of 2 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
21 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Each potential subject must be an appropriate candidate for mobile bearing TAR by having: a primary osteoarthritis, post-traumatic osteoarthritis, or arthritis secondary to inflammatory disease, as determined by the Principle Investigator.
  • Willingness to participate in the study and follow-up visits
  • Written informed consent, including authorization to release collected health data

Exclusion criteria

Exclusion Criteria:

  • Skeletal immaturity
  • Bone stock inadequate to support the device including:

    • Severe osteoporotic or osteopenic condition or other conditions resulting in poor bone quality
    • Avascular necrosis of the talus
  • Active or prior deep infection in the ankle joint or adjacent bones
  • Malalignment or severe deformity of involved or adjacent anatomic structures including:

    • Hindfoot or forefoot malalignment precluding plantigrade foot
    • Significant malalignment of the knee joint
    • Insufficient ligament support that cannot be repaired with soft tissue stabilization (syndesmosis disruption)
  • Charcot joint or peripheral neuropathy that may lead to Charcot joint of the affected ankle
  • Neuromuscular disease resulting in lack of normal muscle function about the affected ankle
  • Lower extremity vascular insufficiency demonstrated by Doppler arterial pressure
  • Poor skin and soft tissue quality about the surgical site
  • Immunosupressive therapy
  • Prior ankle fusion or revision of total ankle replacement
  • High demanding sport activities (e.g., contact sports, jumping)
  • Suspected or documented metal allergy or intolerance
  • Condition or situation which, in the Physician's opinion, puts the subject at significant risk, or may interfere significantly with the subject's participation in the study
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
94 participants (estimated)

Study arms

  • Other
    Treatment Arm

    All subjects who meet eligibility, consented, and enrolled into the study will receive treatment.

    Device: Hintermann Series H3 Total Ankle Replacement System

Interventions

  • DeviceHintermann Series H3 Total Ankle Replacement System

    Intervention will include receiving the FDA approved Hintermann Series H3 Total Ankle Replacement System, to include a tibial component, a polyethylene inlay, and a talar component.

06

What researchers measure

Primary outcomes

  1. Primary Safety Measurement

    The Primary Safety Measurement for this study is the percentage of patient subjects with a serious device-related adverse event, other than a revision or removal within 2 years.

    Time frame: 5-years

  2. Primary Effectiveness Measurement

    The co-primary effectiveness measurements for this study are the American Orthopaedic Foot and Ankle Society (AOFAS) score at 2 years or more, the survivorship (absence of removal/revisions of metal components) within 5 years post-surgery, and the percentage of subjects with a serious device-related adverse event, other than a revision or removal within 2 years.

    Time frame: 5-years

07

Study locations

11 sites
  • Ortho Arkansas
    Little Rock, Arkansas 72204, United States
  • Los Angeles Institute of Foot and Ankle Surgery
    Mission Hills, California 91345, United States
  • Florida Orthopedic Foot & Ankle Center
    Sarasota, Florida 34233, United States
  • Paley Orthopedic & Spine Institute
    West Palm Beach, Florida 33407, United States
  • Orthopaedic Associates
    Evansville, Indiana 47710, United States
  • Department of Orthopedic Surgery, Johns Hopkins Outpatient Center
    Baltimore, Maryland 21287, United States
  • Christus St Vincent
    Alamogordo, New Mexico 88310, United States
  • Duke Orhtopaedics Arringdon
    Morrisville, North Carolina 27560, United States
  • Dept. of Orthopedic Surgery and Rehabilitation, University of Oklahoma
    Oklahoma City, Oklahoma 73104, United States
  • MUSC Department of Orthopaedics/Foot and Anke Services
    Charleston, South Carolina 29425, United States
  • Spring Branch Podiatry, PLLC
    Houston, Texas 77024, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 22, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04770870
Lead sponsor
DT MedTech, LLC
Responsible party
Sponsor
First posted
Feb 25, 2021
Start date
Feb 1, 2022
Primary completion
Sep 1, 2029 (estimated)
Completion
Dec 31, 2029 (estimated)
Last update
Jun 22, 2026

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.

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