In the Rotator cuff interval recess group,we injected 20 mL lidocaine with 2 mg/mL triamcinolone acetonide (Shincort) into into the Rotator cuff interval/anterior capsule.

In the Rotator cuff interval and posterior glenohumeral recess group,we injected 10 mL lidocaine with 2 mg/mL triamcinolone acetonide (Shincort) into the Rotator cuff interval/anterior capsule and 10 mL mL lidocaine with 2 mg/mL triamcinolone acetonide (Shincort) into the posterior glenohumeral.

The injection contained 5ml of triamcinolone acetonide (40 mg)mixed with 5ml of 2% lidocaine hydrochloride and 15ml of normal saline in both groups,In the Rotator cuff interval recess group,we injected 20 mL lidocaine with 2 mg/mL triamcinolone acetonide (Shincort) into into the Rotator cuff interval/anterior capsule.

The SPADI was used to assess the severity ofpain and disability. A previous study has shown that the Chinese version of the SPADI has high internal consistency and test-retest reliability (Yao et al., 2017). It consists of 13 items that are divided into 2 subscales: pain scale (5 items) and disability scale (8 items) (Roach et al., 1991). Each item is rated from 0 (no pain/no difficulty) to 10 (worst pain experienced/ very difficult). The score is then transformed to a 100-point scale, with the highest score indicating the most severe pain and disability. In the literature, the minimal and clinically relevant difference for SPADI has been reported to be 10 points

Regarding VAS, patients were asked to indicate the intensity of their average level ofpain in the affected shoulder within the past 1 week using an 11-point scale, ranging from 0 (no pain) to 10 (worst pain imaginable).