ClinicalTrials.gg
Status unknownNCT03224689Updated Jul 15, 2021

Evaluation of The Safety And Performance of The Freedom Total Knee® System With The PEEK-OPTIMA Femoral Component

An interventional study of PEEK-Optima Femoral Component in Osteoarthritis, Knee, Rheumatoid Arthritis of Knee and Traumatic Arthritis of Knee (Diagnosis), sponsored by Maxx Orthopedics Inc. Status unknown at 1 site in Belgium. Open to participants aged 50 Years to 75 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-07-15.

Sponsored by Maxx Orthopedics Inc · Not applicable, Interventional, and Other

The sponsor has not verified this record recently (last verified Jul 2021), so the status shown — last known as Recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
34
Allocation
Not applicable
Ages
50 Years to 75 Years
Sex
All
01

Study summary

Prospective, multi-centre, non-comparative, post-market surveillance clinical study

Read the detailed description

PRIMARY ENDPOINT:

  • The primary endpoint is to evaluate the procedural success ie successful implantation of the device in the opinion of the surgeon

SECONDARY ENDPOINTS:

The secondary endpoints are to evaluate:

  • KSS Knee scores and KSS Function scores at 6 weeks, 6, 12 and 24 months post-treatment compared to pre-treatment
  • Subject reported outcomes (SF-36, Oxford Knee Score and WOMAC) at 6 weeks, 6, 12 and 24 months post-treatment compared to pre-treatment
  • Stability of the device through radiographic analysis to assess alignment and component position at immediate post-treatment, 6 weeks, 6, 12 and 24 months post-treatment
  • Safety in terms of adverse events and device deficiencies throughout the clinical investigation including any additional knee treatments and/or surgery
  • Survivorship analysis of the device at 12 and 24 months and annually thereafter
02

Conditions studied

  • Osteoarthritis, Knee
  • Rheumatoid Arthritis of Knee
  • Traumatic Arthritis of Knee (Diagnosis)
  • Polyarthritis
  • Fractures, Bone
03

In context

Osteoarthritis, Knee

3,292 studies on the registry are indexed under Osteoarthritis, Knee; 623 are open to participants now.

This study's planned enrollment of 34 is below the median of 68 across 2,714 interventional studies indexed under Osteoarthritis, Knee.

Browse Osteoarthritis, Knee studies →

Lead sponsor

Maxx Orthopedics Inc is the lead sponsor of 5 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
50 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

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

  • Male and female subjects aged 50 years of age or older and less than 75 years of age (>50 and \<75 years).
  • Subjects who require a uni-lateral knee prosthesis and have been evaluated as appropriate candidates for a total knee arthroplasty by the Investigator.
  • Subjects with a primary diagnosis of end-stage symptomatic primary knee osteoarthritis
  • Subjects who, in the opinion of the Investigator, are able to understand this clinical investigation, co-operate with the procedures and are willing to return to the hospital for all the required post-operative follow-ups.
  • Subjects who are able to give voluntary, written to participate in this clinical investigation and from whom consent has been obtained.

Exclusion criteria

EXCLUSION CRITERIA:

  • Subjects who, in the opinion of the Investigator, have an existing condition that would compromise their participation and follow-up in this clinical investigation.
  • Subjects who are known drug or alcohol abusers or with psychological disorders that could affect follow-up care or treatment outcomes.
  • Subjects who have participated in a clinical study with an product in the last 6 months.
  • Subjects with other significant disabling problems from the muscular-skeletal system other than in the knees (i.e muscular dystrophy, polio, neuropathic joints).
  • Subjects with a of 32 or above.
  • Subjects with a current or active history of , active or suspected infection, Paget's disease, renal osteodystrophy, immunologically suppressed, rheumatoid arthritis, sickle cell anemia, and systemic lupus erythematosus.
  • Subjects with a primary or secondary diagnosis of inflammatory or traumatic arthritis.
  • Subjects defined by the Investigator as ASA Grade III or IV.
  • Subjects who have a neuromuscular or neurosensory deficit.
  • Female subjects who are pregnant or lactating.
  • Subjects with an anatomical limb alignment of above 20 degrees varus or valgus.
  • Subjects with a fixed flexion deformity of over 20 degrees.
  • Subjects with recurvatum (definition: hyperextension ≥ 5 degrees).
  • Subjects who have previously undergone total or unicondylar knee arthroplasty, high tibial osteotomy, ligament reconstruction, ORIF or with previous fracture in the ipsilateral knee joint.
Terms in these criteria, in plain language(4)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

05

Study design

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

Study arms

  • Experimental
    PEEK Femoral

    Subjects with a primary diagnosis of end-stage symptomatic primary knee osteoarthritis who require a uni-lateral knee prosthesis and have been evaluated as appropriate candidates for a total knee arthroplasty by the Investigator will be invited to take part in this clinical investigation.

    Device: PEEK-Optima Femoral Component

Interventions

  • DevicePEEK-Optima Femoral Component

    TKA Surgery

06

What researchers measure

Primary outcomes

  1. Knee Society Score (KSS)

    Pre-and post-operative function and patient and mechanical assessment. The KSS contains questions in 2 sections: knee joint (pain, range of motion, stability) and function (walking distance, ability to climb stairs). The greater score correlates to better outcome.

    Time frame: Change from Pre-op versus 6 weeks, 3 months, 6 months,12 months and 24 months

Secondary outcomes

  1. Visual Analog Scale (VAS)

    Patient self administered overall satisfaction (scale from 1 worse -10 best)

    Time frame: Change from Pre-op versus 6 weeks, 3 months, 6 months,12 months and 24 months

  2. SF-36

    Assessment domains to explain variations in patient outcomes. The higher the score the less disability i.e., a score of zero is equivalent to maximum disability and a score of 100 is equivalent to no disability.

    Time frame: Change from Pre-op versus 6 weeks, 3 months, 6 months,12 months and 24 months

  3. Western Ontario and McMaster Universities Arthritis Index (WOMAC)

    Assessment of OA of the knee or hip. Possible score range of 0- 20 for Pain, 0-8 for Stiffness, and 0-68 for Physical Function

    Time frame: Change from Pre-op versus 6 weeks, 3 months, 6 months,12 months and 24 months

  4. Radiographic assessment

    Subjective review and assessment of serial radiographs. Items include presence or absence of radiographic evidence of component loosening, malposition, migration and periprosthetic osteolysis, bone loss or interface composite (bone-cement-component) breakdown.

    Time frame: Change from Pre-op versus 6 weeks, 3 months, 6 months,12 months and 24 months

07

Study locations

1 of 1 sites recruiting
  • More Institue, Department of Orthopedic Surgery
    Antwerp, Belgium
    Recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Jan 2021 (actual). Primary completion is estimated for Dec 2023, 35 months after the start.

Of 140 industry-sponsored interventional studies with no phase under Osteoarthritis, Knee, half reached primary completion within 17 months of starting (the median), counting those still running; a quarter within 10 and three quarters within 34. This study's planned 35 months is above that.

Counting every sponsor, half of 1,251 studies reached it within 18 months; a quarter within 8 and three quarters within 36.

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

Registered
Jul 18, 2017
First posted
Jul 21, 2017
StartActual
Jan 1, 2021
Primary completionEst.
Dec 31, 2023
CompletionEst.
Mar 1, 2024
Last update
Jul 15, 2021
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 Jul 15, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03224689
Lead sponsor
Maxx Orthopedics Inc
Responsible party
Sponsor
First posted
Jul 21, 2017
Start date
Jan 1, 2021
Primary completion
Dec 31, 2023 (estimated)
Completion
Mar 1, 2024 (estimated)
Last update
Jul 15, 2021

Study contacts

Robert Eberle
Contact
robert.eberle@maxxortho.com
+1 (919) 280-6900
Corey Perine
Contact
corey.perine@maxxortho.com
+1 (484) 342-0092 ext. 2100
Peter Verdonk, MD, PhD
principal investigator · More Institute, Antwerp, Belgium

Oversight

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

Not currently enrolling

This study is status unknown, as verified in Jul 2021. You cannot join it, but the record below documents what was studied.

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