Evaluating Upper Limb Movement Precision With AuReha in People With One-Sided Motor Impairment

Intrasubject Evaluation of Upper Limb Movement Precision Using the AuReha System in Individuals With Unilateral Motor Impairment

The clinical investigation is designed as a controlled, two-arm, intra-patient, non-randomized interventional study aimed at assessing the capabilities of the AuReha system in detecting upper limb movement precision in patients with unilateral proprioceptive impairment. The comparison will be conducted within the same subject, between the healthy limb and the impaired limb, through the execution of proprioceptive exercises in an open kinetic chain. The biomechanical parameters collected will include movement precision, trunk stability, compensatory movements, and joint range of motion. In addition to the quantitative analysis, qualitative data will also be collected regarding usability, wearability, and user experience of the system through questionnaires administered to both patients and healthcare professionals.

The study will be conducted at the Shoulder Team Outpatient Clinic in Forlì, enrolling approximately 52 patients.

Study Overview

• Status: Not yet recruiting
• Conditions: Prostheses; Adhesive Capsulitis, Shoulder; Shoulder Posterior Instability; Shoulder Anterior Instability; Shoulder Anterior Latarjet Instability
• Intervention / Treatment: Device: Upper limb rehabilitation wearable device

Detailed Description

The primary goal of this clinical investigation is to support the CE certification process of the AuReha system, a wearable medical device designed for monitoring upper limb movement during rehabilitation.

Specifically, the study aims to assess the movement precision of the upper limb in individuals with unilateral motor impairment. The main objective is to compare, within the same individual, the movement accuracy of the healthy arm versus the impaired arm during a series of rehabilitation exercises guided by the AuReha system.

Secondary objectives include:

• Evaluating the usability of the AuReha system in clinical practice from the perspective of healthcare professionals using the Healthcare Systems Usability Scale (HSUS) and additional targeted questions.
• Assessing patients' user experience during proprioceptive exercises, through the System Usability Scale (SUS), the User Engagement Scale - Short Form (UES-SF), and other custom questions.
• Characterizing the wearability of the device by matching shirt sizes with patients' anthropometric measurements, using both direct observations and questionnaires.
• Analyzing the movement data collected during a specific reaching task prompted by the AuReha system, to gain deeper insight into the quality and precision of the movement performed.

These aspects aim to demonstrate the system's ability to support an optimized rehabilitation process. AuReha is designed to help patients perform their prescribed rehabilitation exercises correctly while collecting detailed biomechanical data. This allows clinicians to closely monitor the patient's response to therapy and make data-driven decisions throughout the recovery process.

• Study Type: Interventional
• Enrollment (Estimated): 52
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Italy
  • FC
    • Forlì, FC, Italy, 47122
      • Poliambulatorio Shoulder Team
      • Contact: Fiumana; Phone Number: +39 3479405736; Email: g.fiumana@gmail.com

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• patients with a healthy contralateral limb
• patients affected by orthopedic shoulder conditions such as posterior instability, anterior instability, anterior Latarjet instability, adhesive capsulitis, or prostheses
• age ≥18 years
• patients who consent to participate in the study by signing the informed consent form

Exclusion Criteria:

• Pregnant and/or breastfeeding women (verified through self-declaration)
• Epilepsy
• Allergy or hypersensitivity to materials used in the medical device, specifically: polypropylene and lycra (fabric), nylon (integrated zipper), viscose and elastane (zipper integration fabric)
• Chronic headache under treatment

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Supportive Care
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm

Intervention / Treatment

Experimental: patients affected by orthopedic shoulder conditions such as posterior instability, ant; The clinical investigation is designed as an interventional, controlled, two-arm intra-patient, non-randomized study aimed at evaluating the capabilities of the AuReha system in detecting the accuracy of upper limb movements in patients with unilateral proprioceptive deficits. The comparison will be conducted within the same subject between the healthy limb and the affected limb, through the performance of proprioceptive exercises in open kinetic chain. No therapeutic or diagnostic interventions will be administered, as this is a non-invasive study focused on system validation and user feedback.

Device: Upper limb rehabilitation wearable device; The intervention consists in using the AuReha system to perform a series of upper limb rehabilitation exercises. No therapeutic or diagnostic interventions will be administered, as this is a non-invasive study focused on system validation and user feedback.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Evaluation of the intra-subject difference in movement accuracy during a target-reaching exercise proposed by the AuReha system, between the healthy limb and the limb affected by motor deficit	Unit of measurement: Percentage (%) - Movement accuracy, expressed as a percentage, measures how precisely the patient performs the prescribed movements, by assessing the deviation of the executed movement from the ideal movement to be performed.	Day 1

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Correlation between AuReha shirt size (categorical: XS, S, M, L,) and the anthropometric measurements of healthy volunteers (in cm)	Evaluation of AuReha's fit on healthy volunteers, through the assessment of the correlation between the selected shirt size (categorical: XS, S, M, L) and continuous anthropometric variables, including body circumferences and segment lengths. Circumferences (in cm) will include: chest, waist, hips, upper arm, and forearm. Segment lengths (in cm) will include: shoulder to iliac spine and shoulder to wrist. All measurements will be taken using a standard anthropometric tape measure.	Day 1
Characterization of AuReha in measuring trunk stability	Trunk stability is a parameter calculated by the AuReha Web Platform that assesses the inclination of the trunk across the three reference planes (frontal, sagittal, and transverse) during exercise execution. Trunk stability is an essential parameter to ensure the correct performance of upper limb movements and to prevent harmful compensations that could negatively impact recovery. Unit of Measure: Percentage (%)	Day 1
Characterization of AuReha in measuring limb compensation	Limb compensation is a parameter calculated by the AuReha Web Platform that monitors any incorrect compensatory movements performed by the limbs during exercises. For example, it can detect shoulder elevation during elbow flexion, or elbow flexion during shoulder movements. This parameter is crucial for identifying and correcting dysfunctional movement patterns that could compromise the rehabilitation process. Unit of Measure: Percentage (%)	Day 1
Characterization of AuReha in measuring the distance to a specified target	This parameter evaluates the final distance from the target to be reached. Unit of Measure: Percentage (%)	Day 1
Characterization of AuReha in measuring the duration of the movement	This parameter calculates the duration of movement execution. Unit of Measure: seconds (s)	Day 1
Characterization of AuReha in terms of usability for patients with the System Usability Scale (SUS)	Assessment of the usability of AuReha by enrolled patients during the evaluation and execution of proprioceptive exercises. Standardized questionnaires will be used (SUS). The questionnaire assesses usability and overall user experience. Responses are based on a 0-4 Likert difficulty scale (from "no difficulty" to "system unusable").	Day 1
Characterization of AuReha in terms of usability for patients with the User Engagement Scale - Short Form (UES-SF)	Assessment of the usability of AuReha by enrolled patients during the evaluation and execution of proprioceptive exercises. Standardized questionnaires will be used (UES-SF). This questionnaire collects user feedback on the AuReha App and the sensorized shirt, focusing on the engagement. Responses are based on a 0-4 Likert difficulty scale (from "no difficulty" to "system unusable").	Day 1
Characterization of AuReha in terms of usability for patients	Assessment of the usability of AuReha by enrolled patients during the evaluation and execution of proprioceptive exercises. Custom questionnaires have been developed for this purpose and are annexed to the clinical protocol. These questionnaires collect user feedback on the AuReha App and the sensorized shirt, focusing on usability, engagement, clarity of instructions, and garment fit. Responses are based on a 0-4 Likert difficulty scale (from "no difficulty" to "system unusable"), and include open-text fields for qualitative insights.	Day 1
Characterization of AuReha in terms of usability for healthcare professionals	Standardized questionnaires will be used, specifically the Healthcare System Usability Scale (HSUS). In addition, custom questionnaires have been developed for this purpose and are annexed to the clinical protocol. These questionnaires collect user feedback on the AuReha App and the sensorized shirt, focusing on usability and clarity of instructions. Responses are based on a 0-4 Likert difficulty scale (from "no difficulty" to "system unusable") and include open-text fields for qualitative insights.	Day 1

Collaborators and Investigators

• Sponsor: DigitalRehab

Study record dates

Study Major Dates

• Study Start (Estimated): October 1, 2025
• Primary Completion (Estimated): October 1, 2025
• Study Completion (Estimated): October 1, 2025

Study Registration Dates

• First Submitted: August 8, 2025
• First Submitted That Met QC Criteria: August 18, 2025
• First Posted (Actual): August 20, 2025

Study Record Updates

• Last Update Posted (Estimated): October 1, 2025
• Last Update Submitted That Met QC Criteria: September 30, 2025
• Last Verified: August 1, 2025

More Information

Terms related to this study

• Keywords: shoulder rehabilitation; upper limb rehabilitation; monitoring system; wearable medical device; inertial measurement sensors; supporting system
• Additional Relevant MeSH Terms: Musculoskeletal Diseases; Joint Diseases; Bursitis
• Other Study ID Numbers: DigitalRehab_01_2025

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No