Web-Based Conversational Assistant After Total Knee Arthroplasty

NCT07731815 | Not Yet Recruiting

• 1 other identifier: HGUVL-TKA-001
• Study Type: interventional
• Target: 60
• Locations: 1 country
• Sites: 1

Brief Summary

Total knee arthroplasty (TKA) is one of the most frequently performed elective orthopaedic procedures. Following hospital discharge, patients must manage pain, wound care and home rehabilitation with limited professional support. This pragmatic randomised pilot trial will evaluate whether a web-based conversational postoperative assistant, used in addition to standard care, improves patient satisfaction and exercise adherence during the first 6 weeks after TKA. Forty to sixty patients undergoing primary elective TKA will be randomised 1:1 to standard care with or without access to the conversational assistant. The primary outcome is overall patient satisfaction at 6 weeks. Secondary outcomes include pain intensity, exercise adherence, unplanned healthcare contacts and postoperative complications.

Conditions

Osteoarthritis (OA) of the Knee

Keywords

Total Knee Arthroplasty; Conversational assistant; Patient Satisfaction; Artificial Intelligence; Digital Health

Outcome Measures

Primary Outcomes (1)

• Overall Patient Satisfaction

  Overall patient satisfaction measured using an 11-point Numeric Rating Scale (NRS), where 0 indicates not satisfied at all and 10 indicates completely satisfied.

  6 weeks after total knee arthroplasty

Secondary Outcomes (4)

• Pain Intensity

  2 weeks and 6 weeks after total knee arthroplasty

• Exercise Adherence

  During the first 6 weeks after total knee arthroplasty

• Unplanned Healthcare Contacts

  During the first 6 weeks after total knee arthroplasty

• Postoperative Complications

  During the first 6 weeks after total knee arthroplasty

Study Arms (2)

Intervention

EXPERIMENTAL

Participants receive standard postoperative care plus access to a web-based conversational postoperative assistant for 6 weeks after primary total knee arthroplasty.

Behavioral: Web-based conversational postoperative assistant

Control

NO INTERVENTION

Participants receive standard postoperative care without access to the web-based conversational postoperative assistant.

Interventions

Web-based conversational postoperative assistant BEHAVIORAL

Participants assigned to the intervention group receive access to a web-based conversational assistant for 6 weeks after primary total knee arthroplasty. The assistant provides evidence-based postoperative education, recovery guidance, answers to common patient questions, and safety-oriented recommendations. It is available on demand and complements, but does not replace, standard postoperative care.

Intervention

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Age ≥18 years.
• Primary, unilateral, elective total knee arthroplasty (TKA).
• Discharged to home following surgery.
• Ability to use a smartphone or tablet with internet access (patient or caregiver).
• Written informed consent provided.

You may not qualify if:

• Revision or bilateral simultaneous TKA.
• Major postoperative complication precluding home discharge (e.g., admission to intensive care, unplanned return to theatre, or haemodynamic instability).
• Severe cognitive impairment precluding informed consent or device use.
• No access to an internet-enabled device.
• Inability or refusal to complete follow-up.
• Participation in another interventional study at enrolment.

Sponsors & Collaborators

• Wojciech Sroga: lead

Study Sites (1)

Hospital Universitario Virgen de los Lirios

Alcoy, Alicante, 03803, Spain

Location

MeSH Terms

Conditions

Osteoarthritis; Patient Satisfaction

Condition Hierarchy (Ancestors)

Arthritis; Joint Diseases; Musculoskeletal Diseases; Rheumatic Diseases; Treatment Adherence and Compliance; Health Behavior; Behavior

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Masking Details: This is an open-label study. Participants and investigators are aware of the assigned intervention.
• Purpose: SUPPORTIVE CARE
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR INVESTIGATOR
• PI Title: Principal Investigator

Model Details: Participants will be randomly assigned in a 1:1 ratio to receive either standard postoperative care plus access to a web-based conversational assistant or standard postoperative care alone.

Study Record Dates

• First Submitted: July 23, 2026
• First Posted: July 28, 2026
• Study Start (Estimated): October 1, 2026
• Primary Completion (Estimated): March 1, 2027
• Study Completion (Estimated): March 1, 2027
• Last Updated: July 28, 2026

Record last verified: 2026-07

Locations

ES (1)