NCT07070570

Brief Summary

After undergoing total hip or total knee arthroplasty, current guidelines recommend routine follow-up with an X-ray within 3 months and again at 1 year. Follow-up at 5 years (for hip arthroplasties) or every 5 years (for knee arthroplasties) is also considered worthwhile according to the guideline. However, these follow-up appointments require considerable time from patients, caregivers, and healthcare professionals, and it is unclear whether they are truly beneficial. It is possible that a single follow-up within 3 months is sufficient. This could potentially prevent over 100,000 unnecessary hospital visits per year, resulting in significant cost savings. If patients or healthcare providers have concerns, they can always request an additional follow-up. The HAKA trial consists of three different work packages (WPs). This trial (WP2) investigates the 10-year follow-up, WP1 examines the 1-year follow-up, and WP3 is a qualitative study exploring the experiences and perceptions of patients and healthcare professionals. The aim of the HAKA trial is to safely reduce routine follow-up appointments after total hip or knee arthroplasty and to revise current clinical guidelines accordingly.

Trial Health

63
Monitor

Trial Health Score

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

Enrollment
1,500

participants targeted

Target at P75+ for not_applicable

Timeline
45mo left

Started Sep 2025

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

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 Progress16%
Sep 2025Dec 2029

First Submitted

Initial submission to the registry

July 14, 2025

Completed
3 days until next milestone

First Posted

Study publicly available on registry

July 17, 2025

Completed
2 months until next milestone

Study Start

First participant enrolled

September 1, 2025

Completed
3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 31, 2028

Expected
1.3 years until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2029

Last Updated

July 17, 2025

Status Verified

July 1, 2025

Enrollment Period

3 years

First QC Date

July 14, 2025

Last Update Submit

July 14, 2025

Conditions

Keywords

Routine follow-upCheck-up on demand

Outcome Measures

Primary Outcomes (3)

  • Number of complications

    The total number of post-operative complications per patient will be recorded.

    Assessed until 11 years after implantation

  • Type of complications

    Complication types will be recorded and categorized (e.g., infection, periprosthetic fracture, loosening, malalignment, dislocation, prosthetic wear).

    Assessed until 11 years after implantation

  • Healthcare consumption

    Healthcare consumption related to THA and TKA FU (number of X-rays and clinical visits)

    Assessed at 10 years after implantation and then at 3 months, 6 months and 12 months.

Secondary Outcomes (9)

  • PROMIS Physical Function

    Assessed at 10 and 11 years after implantation

  • Number of surgical interventions

    Assessed until 11 years after implantation

  • Type of Surgical Interventions

    Assessed until 11 years after implantation

  • Number of additional healthcare consumption

    Assessed at 10 years after implantation and then at 3 months, 6 months and 12 months.

  • Type of additional healthcare consumption

    Assessed at 10 years after implantation and then at 3 months, 6 months and 12 months.

  • +4 more secondary outcomes

Study Arms (3)

Routine Follow-Up (RFU)

OTHER

Standard follow-up care with scheduled X-ray, clinical visit and questionnaires at 10 years after surgery

Other: Routine Follow-Up (RFU)

Active Check-Up on Demand (ACOD)

OTHER

Follow-up care with X-ray, clinical visit and questionnaires at 10 years after surgery when requested by the patient or healthcare provider.

Other: Active Check-Up on Demand (ACOD)

Passive Check-Up on Demand (PCOD)

OTHER

X-ray and clinical visit (without questionnaires) at 10 years after surgery when requested by the patient or healthcare provider.

Other: Passive Check-Up on Demand (PCOD)

Interventions

Standard follow-up care with scheduled X-ray, clinical visit and questionnaires at 10 years after surgery

Routine Follow-Up (RFU)

X-ray, clinical visit and questionnaires at 10 years after surgery when requested by the patient or healthcare provider.

Active Check-Up on Demand (ACOD)

X-ray and clinical visit (without questionnaires) at 10 year when requested by the patient or healthcare provider.

Passive Check-Up on Demand (PCOD)

Eligibility Criteria

Age50 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Underwent primary THA or TKA approximately 10 years ago
  • Age 50 years or older at time of THA or TKA
  • Capable and willing to complete questionnaires (when applicable)
  • Understanding Dutch or English
  • Willing to provide written informed consent in case the patient will complete questionnaires

You may not qualify if:

  • Other indication for surgery than osteoarthritis
  • Deceased
  • Revision arthroplasty of hip or knee, except a conversion from unicompartmental knee arthroplasty to TKA or from hip hemiarthroplasty/resurfacing to THA
  • Already participating in this study due to another hip or knee surgery

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Reinier Haga Orthopedisch Centrum

Zoetermeer, South Holland, 2725 NA, Netherlands

Location

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
DIAGNOSTIC
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 14, 2025

First Posted

July 17, 2025

Study Start

September 1, 2025

Primary Completion (Estimated)

August 31, 2028

Study Completion (Estimated)

December 31, 2029

Last Updated

July 17, 2025

Record last verified: 2025-07

Data Sharing

IPD Sharing
Will share

De-identified individual participant data (IPD) that underlie the results reported in publications (e.g., PROMs, healthcare consumption, complications) will be made available upon reasonable request. Metadata will be openly accessible with a persistent identifier.

Shared Documents
STUDY PROTOCOL, SAP, ICF
Time Frame
IPD and supporting information will be available beginning 6 months after publication of the main results and will remain available for at least 5 years thereafter.
Access Criteria
Researchers who provide a methodologically sound proposal and agree to a data use agreement will be granted access to de-identified IPD and selected supporting documents. Requests can be submitted to the corresponding author or data access contact. Access is conditional on approval by the study team.

Locations