Can an app replace paper rehab after shoulder surgery?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Demographics: Individuals aged 18 years or older. * Diagnosis: Confirmed symptomatic rotator cuff tear requiring surgical intervention, specifically involving: * Clinical Presentation: Persistent shoulder pain and functional deficits (e.g., positive impingement signs or weakness in abduction/external rotation) consistent with rotator cuff pathology. * Radiological Confirmation: Imaging evidence (MRI or high-resolution ultrasound) of a full-thickness supraspinatus and/or infraspinatus tendon tear. * Tear Characteristics: Small-to-medium-sized tears (maximum diameter \< 5 cm) categorized as reparable by the attending surgeon. * Surgical Procedure: Patients undergoing primary arthroscopic rotator cuff repair (ARCR) utilizing a standardized double-row suture bridge technique. * Rehabilitation Adherence: Commitment to follow the standardized postoperative rehabilitation protocol as prescribed by the study. * Cognitive and Functional Capacity: * Absence of cognitive impairment, with the ability to comprehend and execute complex exercise instructions. * Proficiency in digital literacy, including the regular use of an internet-enabled electronic device (smartphone, tablet, or computer) capable of video-based communication and data transmission. * Documentation and Consent: * Availability of comprehensive medical records, including pre- and postoperative clinical and radiological data. * Provision of written informed consent by the patient or a legal representative prior to enrollment Exclusion Criteria: * Pre-existing or concomitant upper extremity dysfunction unrelated to the rotator cuff tear, including cervical disc herniation, cerebrovascular accident (stroke), traumatic brain injury, cervical spinal cord injury, rheumatoid arthritis with shoulder involvement, or brachial plexus injury. * Complex or irreparable rotator cuff tears, defined as large or massive tears (\> 5 cm), high-grade fatty infiltration of the rotator cuff muscles (Goutallier grade ≥ 3), or inability to achieve secure tendon repair using sutures during arthroscopic surgery. * Postoperative complications that significantly interfere with rehabilitation, such as surgical site infection, nerve injury with paralysis, or severe deltoid muscle damage. * Severe comorbidities that may substantially affect the rehabilitation process or patient safety, including acute coronary syndrome, recent stroke, uncontrolled diabetes mellitus, or other debilitating systemic diseases. * Inability or unwillingness to comply with the study protocol, including failure to attend scheduled follow-up assessments or voluntary withdrawal from the study.