An interventional study of Exersite Rehab (AI-based Mobile Application) and Printed Educational Brochure (Traditional Rehabilitation) in Total Knee Arthroplasty, Total Hip Arthroplasty (THA) and Hip Fracture Surgery, sponsored by Gangnam Severance Hospital. Not yet recruiting at 2 sites in South Korea. Open to participants aged 19 Years and older. Per ClinicalTrials.gov, last updated 2026-04-01.
Sponsored by Gangnam Severance Hospital · Not applicable, Interventional, and Treatment
This study aims to evaluate the efficacy and safety of an AI-based home rehabilitation application ("Exersite Rehab") for patients who have undergone hip or knee arthroplasty(Total Knee Arthroplasty (TKA), Total Hip Arthroplasty (THA) or hip fracture surgery). Following surgery, effective rehabilitation is crucial for functional recovery; however, many patients face barriers to consistent in-hospital exercise. This interventional study divides participants into two groups to compare outcomes. The experimental group will perform a 12-week home-based rehabilitation program guided by an AI application that provides real-time posture correction and monitoring. In contrast, the control group will perform the same exercise protocol using traditional printed educational brochures.The primary objective is to determine if the AI-based digital healthcare solution significantly improves physical function, measured by the Functional Ambulatory Category(FAC), compared to conventional methods. Secondary outcomes including pain levels(Visual Analog Scale (VAS)) and joint-specific functional scores (Knee Society Score (KSS), Harris Hip Score (HHS)) will also be assessed over the 12-week period.
842 studies on the registry are indexed under Hip Fractures; 165 are open to participants now.
This study's planned enrollment of 106 is above the median of 86 across 533 interventional studies indexed under Hip Fractures.
Browse Hip Fractures studies →Gangnam Severance Hospital is the lead sponsor of 146 studies on the registry; 38 are open to participants now.
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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.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants in this group will perform a 12-week home rehabilitation program using the "Exercite Rehab" AI-based mobile application, which provides real-time motion tracking and feedback.
Device: Exersite Rehab (AI-based Mobile Application)
Participants in this group will perform the same 12-week rehabilitation exercise protocol using traditional printed educational brochures.
Behavioral: Printed Educational Brochure (Traditional Rehabilitation)
The "Exersite Rehab" is an AI-driven digital healthcare solution designed for post-operative rehabilitation. It utilizes computer vision technology to track the patient's skeletal movements in real-time through a smartphone camera. During the 12-week program, the device provides personalized exercise protocols, real-time posture correction, and automatic repetition counting to ensure safe and effective home-based rehabilitation for patients after hip or knee surgery.
Also known as: AI-based Home Rehabilitation System, Digital Therapeutics for Orthopedic Recovery
Participants in the control group will receive traditional printed educational brochures containing standardized post-operative exercise protocols for hip or knee surgery. These brochures include step-by-step illustrations and written instructions for home-based rehabilitation exercises. Participants are instructed to perform the prescribed exercises independently for 12 weeks, following the same schedule and frequency as the experimental group, but without the AI-based real-time feedback or digital monitoring.
Also known as: Standard Care, Conventional Rehabilitation, Brochure-based Exercise Group, Traditional Home-based Exercise
Timed Up and Go (TUG) test
The TUG test measures the time (in seconds) taken by a participant to stand up from a chair, walk 3 meters, turn around, walk back, and sit down. It is used to assess mobility, balance, and fall risk. (Note: For hip fracture patients, the baseline is measured at POD 1 week instead of pre-op.)
Time frame: Baseline (Pre-operation) and POD 12 weeks
Functional Ambulation Category (FAC)
Functional ambulation status assessed on a scale of 0 (non-ambulatory) to 5 (independent).
Time frame: Baseline (Pre-op), POD 1 week, POD 4 weeks, POD 8 weeks, and POD 12 weeks
Gait Analysis [Geometry]
Evaluation of spatial parameters including Step length (Lt/Rt), Stride length, and Step width. • Unit of Measure: Centimeters (cm)
Time frame: Baseline (Pre-op), POD 1 week, and POD 12 weeks
Gait Analysis [Phase]
Assessment of the percentage distribution of gait phases: Stance phase (Lt/Rt), Swing phase (Lt/Rt), and Double stance phase. • Unit of Measure: Percentage (%)
Time frame: Baseline (Pre-op), POD 1 week, and POD 12 weeks
Gait Analysis [Timing (Cadence)]
Evaluation of temporal gait parameters focusing on cadence. It measures the number of steps taken per minute (steps/min) using a gait analysis system. • Unit of Measure: Steps per minute
Time frame: Baseline (Pre-op), POD 1 week, and POD 12 weeks
Gait Analysis [Timing (Velocity)]
Evaluation of temporal gait parameters focusing on velocity. It measures the participant's walking speed (km/h) using a gait analysis system. • Unit of Measure: Kilometers per hour (km/h)
Time frame: Baseline (Pre-op), POD 1 week, and POD 12 weeks
Range of Motion (ROM)
Passive and active joint angles (flexion, extension, etc.) of the hip or knee measured by a goniometer.
Time frame: Baseline (Pre-op), POD 1 week, and POD 12 weeks
Manual Muscle Test (MMT)
Assessment of muscle strength around the hip or knee joint using a scale from 0 (no muscle contraction) to 5 (normal strength).
Time frame: Baseline (Pre-op), POD 1 week, and POD 12 weeks
Berg Balance Scale (BBS)
A 14-item objective measure designed to assess static balance and fall risk. Total score ranges from 0 to 56.
Time frame: Baseline (Pre-op), POD 1 week, and POD 12 weeks
Physical Function (Harris Hip Score [HHS])
A clinician-based assessment used to evaluate hip function. The score ranges from 0 to 100, where higher scores indicate better functional outcomes and less pain. • Unit of Measure: Units on a scale
Time frame: Baseline (Pre-op), POD 1 week, and POD 12 weeks
Physical Function (Knee Society Score [KSS])
: A clinician-based assessment used to evaluate knee function and patient satisfaction. The score ranges from 0 to 100, where higher scores indicate better clinical outcomes and improved knee function. • Unit of Measure: Units on a scale
Time frame: Baseline (Pre-op), POD 1 week, and POD 12 weeks
Physical Function (Western Ontario and McMaster Universities Osteoarthritis Index [WOMAC])
A self-reported questionnaire used to evaluate the condition of patients with osteoarthritis. The score ranges from 0 to 96, where lower scores indicate better outcomes (less pain, stiffness, and physical limitation). • Unit of Measure: Units on a scale
Time frame: Baseline (Pre-op), POD 1 week, and POD 12 weeks
Pain (NRS(Numeric Rating Scale))
Patient-reported pain intensity on a scale from 0 (no pain) to 10 (the most severe pain imaginable).
Time frame: Baseline (Pre-op), POD 1 week, POD 4 weeks, POD 8 weeks, and POD 12 weeks
Quality of Life (Short Form-36 [SF-36])
A self-reported questionnaire (Short Form-36 \[SF-36\]) used to evaluate health-related quality of life, covering both physical and mental health domains. The score for each domain ranges from 0 to 100, where higher scores indicate a better quality of life and better health status. • Unit of Measure: Units on a scale
Time frame: Baseline (Pre-op), POD 1 week, and POD 12 weeks
Muscle Strength (Handgrip Strength)
Assessment of maximum voluntary contraction using a digital hand dynamometer. Higher values indicate better muscle strength. • Unit of Measure: Kilograms (kg)
Time frame: Baseline (Pre-op) and POD 12 weeks
Physical Performance (Short Physical Performance Battery [SPPB])
A standardized assessment including gait speed, chair stand test, and balance tests. The total score ranges from 0 to 12, where higher scores indicate better physical performance and mobility. • Unit of Measure: Units on a scale
Time frame: Baseline (Pre-op) and POD 12 weeks
Body Composition (Bioelectrical Impedance Analysis [BIA])
Evaluation of body composition, specifically focusing on skeletal muscle mass, using a Bioelectrical Impedance Analysis (BIA) device. This assessment measures the electrical impedance of body tissues to estimate muscle mass. Higher values indicate a greater amount of muscle mass. • Unit of Measure: Kilograms (kg)
Time frame: Baseline (Pre-op) and POD 12 weeks
Plan to share: No — Individual participant data (IPD) will not be shared with other researchers to ensure the privacy and confidentiality of the participants, in accordance with the Institutional Review Board (IRB) guidelines and personal information protection protocols of Gangnam Severance Hospital. Only de-identified, aggregated study results and statistical analyses will be made available through scientific publications and conference presentations. Access to the raw data is restricted to the primary investigators and authorized research personnel involved in the "Dr. Answer 3.0" project.
This study is not yet recruiting, as verified in Mar 2026. You cannot join it, but the record below documents what was studied.
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