HAKA: Routine Follow-up at 10 Years After Hip- or Knee Arthroplasty: Wasting Resources or Appropriate Healthcare?
HAKA 10 years
1 other identifier
interventional
1,500
1 country
1
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
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Sep 2025
Longer than P75 for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
July 14, 2025
CompletedFirst Posted
Study publicly available on registry
July 17, 2025
CompletedStudy Start
First participant enrolled
September 1, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
August 31, 2028
ExpectedStudy Completion
Last participant's last visit for all outcomes
December 31, 2029
July 17, 2025
July 1, 2025
3 years
July 14, 2025
July 14, 2025
Conditions
Keywords
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)
OTHERStandard follow-up care with scheduled X-ray, clinical visit and questionnaires at 10 years after surgery
Active Check-Up on Demand (ACOD)
OTHERFollow-up care with X-ray, clinical visit and questionnaires at 10 years after surgery when requested by the patient or healthcare provider.
Passive Check-Up on Demand (PCOD)
OTHERX-ray and clinical visit (without questionnaires) at 10 years after surgery when requested by the patient or healthcare provider.
Interventions
Standard follow-up care with scheduled X-ray, clinical visit and questionnaires at 10 years after surgery
X-ray, clinical visit and questionnaires at 10 years after surgery when requested by the patient or healthcare provider.
X-ray and clinical visit (without questionnaires) at 10 year when requested by the patient or healthcare provider.
Eligibility Criteria
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
- Reinier Haga Orthopedisch Centrumlead
- JointResearchcollaborator
- Tergooi Medical Centercollaborator
Study Sites (1)
Reinier Haga Orthopedisch Centrum
Zoetermeer, South Holland, 2725 NA, Netherlands
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
- 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.
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.