An interventional study of Digital patient education mobile application. and Standard Care (in control arm) in Feasibility Studies, sponsored by Coxa, Hospital for Joint Replacement. Active, not recruiting at 1 site in Finland. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2026-11-10.
Sponsored by Coxa, Hospital for Joint Replacement · Not applicable, Interventional, and Health services research
Help build ClinicalTrials.gg — short surveys, remote interviews or testing, in your language. Take part →
This study is a pilot study for a larger future research project aimed at examining the effects of patient education delivered via a mobile application on patients' self-reported receipt of information in relation to their information needs, as well as on patient-reported quality of life, pain, and functional capacity, compared with traditional patient education provided during in-person appointments or by telephone. The primary objective of this pilot study is to assess the feasibility of conducting the forthcoming larger-scale study.
Research questions:
The study will be conducted as a randomized controlled trial (RCT). Patients will be allocated into two groups:
Intervention group: receives patient education via a mobile application. Control group: receives traditional patient education during face-to-face clinic visits or by telephone.
Data will be collected using questionnaires before surgery (three measurement points) and after surgery (two measurement points).
Coxa, Hospital for Joint Replacement is the lead sponsor of 8 studies on the registry; 1 is open to participants now.
Counted across the registry records on this site, refreshed daily.
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.
Exclusion Criteria:
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.
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.
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
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.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ASA physical status
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Receives patient education via a mobile application.
Other: Digital patient education mobile application.
Receives traditional patient education during face-to-face clinic visits or by telephone.
Other: Standard Care (in control arm)
The mobile application intervention is delivered via a free smartphone application provided by Buddy Healthcare Ltd Oy. The application contains digital patient education material for patients undergoing total joint replacement surgery, corresponding in content to the printed Patient Guide.
Patient education provided verbally either face-to-face or by telephone.
Feasibility and Acceptability
Primary outcome measures focus on evaluating the feasibility and acceptability of the intervention by assessing recruitment, adherence, acceptability, and fidelity. Recruitment will be evaluated by determining the proportion of patients who meet the eligibility criteria and the proportion of eligible patients who consent to participate. Adherence will be assessed by examining the proportion of participants who complete all questionnaires and the proportion who do not contribute data due to drop-out. Acceptability will be explored in terms of how well the study design and intervention content are received by participants. Fidelity will be evaluated by assessing how closely the intervention content is delivered as intended.
Time frame: A repeated measures design will be conducted; at baseline, 2 months before surgery, 1-2 weeks before surgery , 4-8 weeks after surgery and 3 months after surgery
Expected Knowledge of Hospital Patients, EKhp (©Leino-Kilpi, Salanterä, Hölttä 2003)
A 40-item self-report questionnaire. The instrument based on six knowledge dimensions: biophysiological, functional, experiential, ethical, social, and financial knowledge. Items are on a scale from 0 to 4. All scale scores will be reversed from the original order to facilitate interpretation in statistical analyses (original: 1 = "strongly agree" and 4 = "strongly disagree"; reversed: 4 = "strongly agree" and 1 = "strongly disagree"). Higher scores indicate greater expectations of patient information.
Time frame: Baseline, before randomization
Received Knowledge of Hospital Patients, RKhp (©Leino-Kilpi, Salanterä, Hölttä 2003)
A 40-item self-report questionnaire. The instrument based on six knowledge dimensions: biophysiological, functional, experiential, ethical, social, and financial knowledge. Items are on a scale from 0 to 4. All scale scores will be reversed from the original order to facilitate interpretation in statistical analyses (original: 1 = "strongly agree" and 4 = "strongly disagree"; reversed: 4 = "strongly agree" and 1 = "strongly disagree"). Higher scores indicate higher level of information received.
Time frame: 2 weeks before surgery and 4-8 weeks after surgery
Changes in health-related quality of life
Quality of life on the EuroQoL-5 Dimensions EQ-5D-5L. The measure is standardised instrument looking at quality of life across five health domains (mobility, self-care, usual activities, pain/discomfort and anxiety/depression).
Time frame: Baseline, 1-2 weeks before surgery , 4-8 weeks after surgery
Changes in pain scale measurement
NRS, Numeral Rating Scale.
Time frame: Baseline, 1-2 weeks before surgery , 4-8 weeks after surgery
Changes in patient reported outcome measures scores (PROMs), Functional improvement
Oxford Knee Score (OKS)
Time frame: 2 months before surgery and 3 months after surgery
Changes in patient reported outcome measures scores (PROMs), Functional improvement
Oxford Hip Score (OHS)
Time frame: 2 months before surgery and 3 months after surgery
Plan to share: No — Data collected in the study will not be shared with anyone other than individuals working on the study.
No publications or documents are linked to this record.
Started May 2026 (actual). Primary completion is estimated for Aug 2027, 15 months after the start.
Start moved once since we started tracking on Sep 25, 2026: Apr 2026 → May 2026, on Nov 10, 2026.
Earlier changes are on the record history on ClinicalTrials.gov ↗
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is active, not recruiting, as verified in Nov 2026. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions 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.
Coxa, Hospital for Joint Replacement