NCT04033588

Brief Summary

A prospective, multi-centre, non-comparative, post-market clinical follow-up study to evaluate the survivorship, safety and performance of the Freedom® Total Knee System in the treatment of approximately 450 subjects who in the surgeon's opinion require a primary total knee replacement due to severe knee joint pain and loss of mobility due to osteoarthritis, rheumatoid arthritis or post-traumatic arthritis at upto 15 centers in the United Kingdom (UK). The primary objective of this study is to obtain implant survivorship and clinical outcomes data for commercially available Freedom® Total Knee System used in total knee replacement. Subjects must meet all the study inclusion / exclusion criteria before enrolment in the study. Subjects will be requested to attend out-patients clinic for clinical follow-up (CFU) or approached for telephonic follow-up (TFU) post-operatively as mentioned below. Clinical \& Telephonic Follow-up details:

  • 6-8 weeks ± 1week (Clinical follow-up)
  • 1 year ± 1 month (Clinical follow-up)
  • 3 years ± 6 months (Clinical follow-up)
  • 5 years ± 6 month (Clinical follow-up (optional) / Telephonic follow-up)
  • 10 years± 6 month (Clinical follow-up (optional) / Telephonic follow-up)

Trial Health

65
Monitor

Trial Health Score

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

Enrollment
450

participants targeted

Target at P75+ for not_applicable knee-osteoarthritis

Timeline
77mo left

Started Jan 2021

Longer than P75 for not_applicable knee-osteoarthritis

Status
not yet 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 Progress46%
Jan 2021Sep 2032

First Submitted

Initial submission to the registry

January 23, 2019

Completed
6 months until next milestone

First Posted

Study publicly available on registry

July 26, 2019

Completed
1.4 years until next milestone

Study Start

First participant enrolled

January 1, 2021

Completed
3.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 1, 2024

Completed
8 years until next milestone

Study Completion

Last participant's last visit for all outcomes

September 1, 2032

Expected
Last Updated

October 5, 2020

Status Verified

October 1, 2020

Enrollment Period

3.7 years

First QC Date

January 23, 2019

Last Update Submit

October 1, 2020

Conditions

Outcome Measures

Primary Outcomes (1)

  • Implant Survivorship Kaplan-Meier estimates of survivorship for all components

    Implant survivor-ship will be established by using revision surgery on the operated knee as implant failure.

    At 3 years

Secondary Outcomes (3)

  • Oxford Knee Score which consists of 12 questions

    At 1 year and 3 years

  • Range of Motion using a standard goniometer

    At 1 year and 3 years

  • Knee Society Score

    At 1 year and 3 years

Study Arms (1)

Freedom® Total Knee System

OTHER

A prospective, multi-centre, non-comparative, post-market clinical follow-up study to evaluate the survivorship, safety and performance of the Freedom® Total Knee System in United Kingdom

Device: Freedom® Total Knee System

Interventions

To evaluate the survivorship, safety and performance of the Freedom® Total Knee System in the treatment of subjects who in the surgeon's opinion require a primary total knee replacement due to severe knee joint pain and loss of mobility due to osteoarthritis, rheumatoid arthritis or post-traumatic arthritis.

Freedom® Total Knee System

Eligibility Criteria

Age18 Years - 75 Years
Sexall(Gender-based eligibility)
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Male and female subjects aged between 18 years and 75 years.
  • Subjects who require unilateral knee prosthesis and have been evaluated as appropriate candidates for a total knee replacement by the investigator.
  • Subjects suffering from severe knee joint pain and loss of mobility due to rheumatoid arthritis, osteoarthritis or post-traumatic osteoarthritis.
  • Subjects, who in the opinion of the investigator are able to understand this clinical investigation, co-operate with the investigational 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 informed consent to participate in this clinical investigation and from whom consent has been obtained.

You may not qualify if:

  • 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 abuse or with psychological disorders that could affect follow-up care or treatment outcomes.
  • Subject with a known sensitivity to device materials.
  • 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 BMI of 40 or above.
  • Subjects with a current or active history of malignancy, active or suspected infection, Paget's disease, renal osteodystrophy, immunologically suppressed or have any other significant medical illness judged by investigator to exclude from study.
  • Subject with neuromuscular or neurosensory deficiency that may limit ability of the patient to evaluate the safety and efficacy of the device.
  • Female subjects who are pregnant or lactating.
  • Subjects who have previously undergone total or unicondylar knee replacement, high tibial osteotomy, ligament reconstruction, open reduction internal fixation (ORIF) or with previous fracture in the ipsilateral knee joint.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Conditions

Osteoarthritis, KneeArthritis, Rheumatoid

Condition Hierarchy (Ancestors)

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

Study Officials

  • Prof. Hemant Pandit, FRCS (Orth)

    Chapel Allerton Hospital and University of Leeds

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Vikas Salgotra, M.Phil

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Model Details: A prospective, multi-centre, non-comparative, post-market clinical follow-up study
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

January 23, 2019

First Posted

July 26, 2019

Study Start

January 1, 2021

Primary Completion

September 1, 2024

Study Completion (Estimated)

September 1, 2032

Last Updated

October 5, 2020

Record last verified: 2020-10

Data Sharing

IPD Sharing
Will not share