NCT02038140

Brief Summary

The primary objective of this study is to obtain implant survivorship and clinical outcome data for commercially available Zimmer Trabecular Metal Total Ankle implants used in primary or revision total ankle arthroplasty. The assessment will include implant survivorship and clinical performance measured by pain and function, quality of life data, radiographic parameters and survivorship.

Trial Health

82
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
120

participants targeted

Target at P50-P75 for not_applicable

Timeline
10mo left

Started Mar 2014

Longer than P75 for not_applicable

Geographic Reach
6 countries

11 active sites

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress94%
Mar 2014Mar 2027

First Submitted

Initial submission to the registry

January 14, 2014

Completed
2 days until next milestone

First Posted

Study publicly available on registry

January 16, 2014

Completed
1 month until next milestone

Study Start

First participant enrolled

March 1, 2014

Completed
13 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 1, 2027

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 1, 2027

Last Updated

October 29, 2025

Status Verified

October 1, 2025

Enrollment Period

13 years

First QC Date

January 14, 2014

Last Update Submit

October 28, 2025

Conditions

Keywords

Primary Ankle ReplacementTotal Ankle ArthroplastyTotal Ankle ReplacementTrabecular Metal Total Ankle

Outcome Measures

Primary Outcomes (1)

  • Survivorship

    Survival of the implants after 10 years which is based on removal of the prosthesis and will be determined using the Kaplan Meier Method.

    10 years

Secondary Outcomes (1)

  • American Orthopaedic Foot and Ankle Society Score

    First 2 years

Study Arms (1)

Zimmer TM Total Ankle System

OTHER

Primary or revision total ankle arthroplasty subjects that receive the Zimmer Trabecular Metal Total Ankle System

Device: Zimmer Trabecular Metal Total Ankle System

Interventions

Primary or revision total ankle replacement

Also known as: Primary Ankle Replacement, Total Ankle Arthroplasty, Total Ankle Replacement
Zimmer TM Total Ankle System

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • The patient is \> 18 years of age
  • The patient is skeletally mature
  • The patient qualifies for primary or revision total ankle replacement based on physical exam and medical history including the following: degenerative arthritis, rheumatoid arthritis, post-traumatic arthritis.
  • The patient is willing and able to provide written informed consent
  • Patient is willing and able to cooperate in the required post-operative therapy
  • The patient is willing and able to complete scheduled follow-up evaluations questionnaires as described in the Informed Consent
  • The patient has participated in the Informed Consent process and has signed the Institutional Review Board/European Commission approved Informed Consent

You may not qualify if:

  • The patient is: a prisoner, mentally incompetent or unable to understand what participation in the study entails, a known alcohol or drug abuser, anticipated to be non-compliant.
  • The patient has one of the following compromising the affected limb: ankle arthrodesis with malleolar exeresis, severe neurological or vascular disease, loss of musculature or neuromuscular compromise, severe instability, maltracking or misalignment of the tibia and talus uncorrectable by surgery.
  • The patient has a local/systemic infection that may affect the prosthetic joint
  • The patient has a previous history of infection in the affected joint
  • The patient is known to be pregnant
  • The patient has insufficient bone stock or bone quality to fix the components (i.e. osteoporosis, Charcot's disease)
  • The patient has a known sensitivity or allergic reaction to one or more of the implanted materials
  • The patient is unwilling or unable to give consent or to comply with the follow-up program

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (11)

University California Davis

Sacramento, California, 95817, United States

Location

Orthopaedic Associates of Grand Rapids REI

Grand Rapids, Michigan, 49503, United States

Location

OrthoCarolina Research Institute

Charlotte, North Carolina, 28207, United States

Location

Duke University

Durham, North Carolina, 27705-4677, United States

Location

The Rothman Institute

Philadelphia, Pennsylvania, 19107, United States

Location

UBC Providence Health Care Research Institute

Vancouver, British Columbia, V6Z 1Y6, Canada

Location

Turku University Hospital Finland

Turku, Finland

Location

Klinikverbund St. Antonius und St. Josef GmbH

Wuppertal, Germany

Location

Humanitas San Pio X

Milan, Milano MI, 20159, Italy

Location

Inselspital-Stiftung Universitatsspital Bern

Bern, 3010, Switzerland

Location

Spital StS AG

Thun, Switzerland

Location

MeSH Terms

Conditions

OsteoarthritisArthritis, Rheumatoid

Interventions

Arthroplasty, Replacement, Ankle

Condition Hierarchy (Ancestors)

ArthritisJoint DiseasesMusculoskeletal DiseasesRheumatic DiseasesConnective Tissue DiseasesSkin and Connective Tissue DiseasesAutoimmune DiseasesImmune System Diseases

Intervention Hierarchy (Ancestors)

Arthroplasty, ReplacementArthroplastyOrthopedic ProceduresSurgical Procedures, OperativePlastic Surgery ProceduresProsthesis Implantation

Study Officials

  • Hillary Overholser, MS

    Zimmer Biomet

    STUDY DIRECTOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

January 14, 2014

First Posted

January 16, 2014

Study Start

March 1, 2014

Primary Completion (Estimated)

March 1, 2027

Study Completion (Estimated)

March 1, 2027

Last Updated

October 29, 2025

Record last verified: 2025-10

Data Sharing

IPD Sharing
Will not share

Locations