Ntelligently Integrated Digital Rehabilitation Model Combining mHealth and ERAS in Total Hip and Knee Arthroplasty

Protocol This study is a single-center, randomized controlled trial designed to evaluate the effectiveness of a WeChat-based mini-program mobile health (mHealth) intervention combined with an Enhanced Recovery After Surgery (ERAS) protocol for postoperative rehabilitation in patients undergoing total hip arthroplasty (THA) and total knee arthroplasty (TKA). The study will be conducted at the Affiliated Hospital of Southwest Medical University from July 2025 to December 2025, approved by the Ethics Committee (SH9H-2025-021), and registered on a clinical trials platform. The study population consists of adults scheduled for unilateral primary THA or TKA, aged 18-80 years, with basic smartphone proficiency. Exclusion criteria include revision surgery, bilateral surgery, severe cognitive impairment, or baseline depression. Using a block randomization method stratified by surgical site (hip vs. knee), eligible participants will be allocated in a 1:1 ratio to either the intervention group (ERAS + "Joint Rehabilitation Assistant" mini-program) or the control group (ERAS only). The control group receives standard ERAS management, while the intervention group additionally uses the theoretically-grounded mini-program (based on self-efficacy theory, health belief model, and learning theory), which provides personalized rehabilitation plans, progress tracking, community interaction, and emotional support. The primary outcome is physical function (HOOS-PS/KOOS-PS) at 6 weeks postoperatively. Secondary outcomes include pain, psychological status, quality of life, and safety indicators. The calculated sample size is 70 patients per group (total 140), accounting for a 20% dropout rate. Statistical analysis will follow the intention-to-treat principle, using linear mixed models to compare intergroup differences, with subgroup and sensitivity analyses performed. All outcome assessments will be conducted by blinded personnel to ensure data quality. This protocol aims to validate the effectiveness and safety of the integrated digital rehabilitation model in improving functional recovery and quality of life, providing evidence-based support for post-arthroplasty rehabilitation

NCT Number	NCT07199478
Lead Sponsor	The Affiliated Hospital Of Southwest Medical University
Conditions	Total Knee Arthroplasty, Total Hip Arthroplasty, ERAS
Enrollment	140 participants
Start Date	2025-09-01
Primary Completion	2025-10-31 (estimated)
Study Completion	2026-01-29 (estimated)
Updated on ClinicalTrials.gov	2026-03-06