Patients undergoing arthroscopic rotator cuff repair using the REGENETEN Bioinductive Implant

Arthroscopic rotator cuff repair aims at repairing the rotator cuff following tendon tear. The REGENETEN Bioinductive Implant is a medical device intended for the management and protection of tendon injuries. The REGENETEN Bioinductive Implant is indicated for the management and protection of rotator cuff tendon injuries in which there has been no substantial loss of tendon tissue.

The descriptive system is used to describe the subject's health state & consists of 5 dimensions: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. Each dimension has 5 levels to choose the most appropriate answer: no problems, slight problems, moderate problems, severe problems, and extreme problems. The subject is asked to indicate his/her health state by marking the most appropriate statement in each of the five areas. Responses are coded as single-digit numbers expressing the severity level selected in each dimension. For instance, 'slight problems' (e.g. 'I have slight problems in walking about') is always coded as '2'. The digits for the 5 dimensions are combined in a 5-digit code. The EQ- 5D-5L index value is derived by using the vendor supplied calculator to convert each 5-digit EQ-5D-5L profile. A higher number is a better outcome.

Quick DASH (Disabilities of Arm, Shoulder and Hand) is designed to measure physical function and symptoms. It assesses 11 items, with scores ranging from 0 to 100 where 0 indicates no disability (i.e., better outcome) and 100 indicates most severe disability (i.e., worse outcome).

The Oxford Shoulder Score (OSS) is a questionnaire for the assessment of outcomes of shoulder surgery, which can reduce the observer's errors in the evaluation. It contains 12- item patient-reported outcome (PRO) measures specifically designed and developed for assessing outcomes of shoulder surgery such as assessing the impact on patients' quality of life of degenerative conditions (e.g., arthritis and rotator cuff problems).

The OSS consists of 12 questions each scored 0 to 4 (0=unbearable, 1=severe, 2=moderate, 3=mild, 4=none) with 4 representing the best outcome. When the 12 items are summed, this produces overall scores that run from 0 to 48, with zero (0) representing a severe shoulder problem and 48 representing no related problem. Higher scores represent better clinical outcomes.

Cumulative 3 months, 6 months, 12 months, and 24 months retear rate. Failure is defined as Sugaya Type IV or V retear/recurrence (full-thickness discontinuity seen on both coronal and oblique sagittal MRI images).