ClinicalTrials.gg
CompletedNCT05231304RECLAIMUpdated Feb 21, 2024

Retrospective Evaluation of Clinical and Radiographic Outcomes Following Total Talus Replacement

An observational study in Talus and Ankle Arthropathy, sponsored by Restor3D. Completed at 2 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-02-21.

Sponsored by Restor3D · Observational

Study type
Observational
Model
Case-crossover
Time perspective
Retrospective
Enrollment
80
Ages
18 Years and older
Sex
All
01

Study summary

This study is a retrospective analysis of patients who underwent surgery using a total talus replacement (TTR) implant with or without concurrent total ankle replacement and/or subtalar fusion. This study seeks to analyze the clinical and radiographic outcomes of TTR implant recipients and generate additional data on the safety and benefit of the TTR implant.

02

Conditions studied

  • Talus
  • Ankle Arthropathy

Browse trials for

Keywords

  • Retrospective Study
  • Ankle Joint
  • Talus
  • Arthrodesis
  • Printing, Three-Dimensional
  • Joint Prosthesis
  • Prosthesis Design
03

In context

Ankylosis

83 studies on the registry are indexed under Ankylosis; 18 are open to participants now.

This study's enrollment of 80 is below the median of 103 across 46 observational studies indexed under Ankylosis.

Browse Ankylosis studies →

Lead sponsor

Restor3D is the lead sponsor of 24 studies on the registry; 2 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

All adult patients who underwent surgery involving a TTR implant with or without total ankle replacement and/or subtalar fusion between 1/1/2019 and 01/28/2022 will be will be included in this retrospective review. Patients with at least one postoperative follow-up visit will be included in this study. Only data in existence as of 01/28/2022 will be collected.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • >18 Years of Age
  • Patient underwent surgery involving a total talus replacement implant between 1/1/2019 and 01/28/2022.

Exclusion criteria

Exclusion Criteria:

  • No available postoperative data
05

Study design

Observational model
Case-crossover
Time perspective
Retrospective
Enrollment
80 participants (actual)
Patient registry
No

Groups and cohorts

  • Total Talus Replacement

    Procedure: Total Talus Replacement (TTR)

  • Total Ankle Total Talus Replacement

    Procedure: Total Ankle Total Talus Replacement (TATTR)

  • Total Ankle Total Talus Replacement + Subtalar Fusion

    Procedure: Total Ankle Total Talus Replacement + Subtalar Fusion (TATTR + STJ)

  • Total Talus Replacement + Subtalar Fusion

    Procedure: Total Talus Replacement + Subtalar Fusion (TTR + STJ)

Interventions

  • ProcedureTotal Talus Replacement (TTR)

    Surgical implantation of restor3d's patient-specific custom Total Talus Replacement device.

  • ProcedureTotal Ankle Total Talus Replacement (TATTR)

    Surgical implantation of restor3d's patient-specific custom Total Ankle Total Talus Replacement (TATTR) device.

  • ProcedureTotal Ankle Total Talus Replacement + Subtalar Fusion (TATTR + STJ)

    Surgical implantation of restor3d's patient-specific custom Total Ankle Total Talus Replacement (TATTR) device with concurrent subtalar fusion.

  • ProcedureTotal Talus Replacement + Subtalar Fusion (TTR + STJ)

    Surgical implantation of restor3d's patient-specific custom Total Talus Replacement (TTR) device with concurrent subtalar fusion.

06

What researchers measure

Primary outcomes

  1. Improvement in pain from pre-operative baseline

    Primary probable benefit endpoint is improvement in pain at 12 months from preoperative baseline.

    Time frame: 12-months

Secondary outcomes

  1. Improvement in Patient Reported Outcomes

    Secondary probably benefit endpoints will include patient reported functional outcome measures

    Time frame: 3 months

  2. Improvement in Patient Reported Outcomes

    Secondary probably benefit endpoints will include patient reported functional outcome measures

    Time frame: 6 months

  3. Improvement in Patient Reported Outcomes

    Secondary probably benefit endpoints will include patient reported functional outcome measures

    Time frame: 12 months

  4. Improvement in Patient Reported Outcomes

    Secondary probably benefit endpoints will include patient reported functional outcome measures

    Time frame: 24 months

  5. Improvement in Patient Reported Outcomes

    Secondary probably benefit endpoints will include patient reported functional outcome measures

    Time frame: 36 months

Other outcomes

  1. Subsequent Surgical Intervention

    The primary safety outcome measure is rate of subsequent surgical intervention (SSI), as defined as any surgical procedure or service required after the initial implant of the TTR device.

    Time frame: Up to 3 years.

  2. Adverse Events (AEs)/Serious Adverse Events (SAEs)

    Safety outcome measures by occurrence of adverse events (AEs), device- or procedure related AEs, and serious AEs.

    Time frame: Up to 3 years.

07

Study locations

2 sites
  • Orthopaedic Institute of Western Kentucky
    Paducah, Kentucky 42001, United States
  • The Bellevue Hospital
    Bellevue, Ohio 44811, United States
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Apr 2022 to primary completion in Jan 2023, 9 months.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 27, 2022
First posted
Feb 9, 2022
StartActual
Apr 5, 2022
Primary completionActual
Jan 6, 2023
CompletionActual
Feb 19, 2024
Last update
Feb 21, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Feb 21, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05231304
Lead sponsor
Restor3D
Responsible party
Sponsor
First posted
Feb 9, 2022
Start date
Apr 5, 2022
Primary completion
Jan 6, 2023
Completion
Feb 19, 2024
Last update
Feb 21, 2024

Oversight

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

Not currently enrolling

This study is completed, as verified in Feb 2024. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion