Effects of scapulo-humeral training on ultrasonographic and clinical evaluations in stroke: a randomized controlled trial

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Background After stroke, the effects of focused scapulo-humeral training with simultaneous assessment of the changes in shoulder subluxation, related muscle thicknesses and upper limb performance have not been studied in the literature.Objectives This study aimed to investigate the effects of an 8-week scapulo-humeral training program in addition to conventional rehabilitation on upper extremity/trunk functions, shoulder pain, and sonographic measurements of the shoulder joint and periscapular muscles.Methods Thirty stroke individuals were randomly separated into two groups as Group I-scapulo-humeral training (5F/10 M) and Group II – control (5F/10 M). Conventional rehabilitation program was applied to both groups, and a scapulo-humeral training exercise protocol was added for the scapulo-humeral group. All the treatments were applied for 1 hour/day, 3 days/week, 8 weeks. Clinical evaluations were made using the Fugl Meyer Assessment-Upper Extremity(FMA-UE), Action Research Arm Test(ARAT), ABILHAND, Visual Analog Scale, and Trunk Impairment Scale(TIS). Ultrasound was used to measure serratus anterior/lower trapezius muscle thicknesses, and acromion-greater tubercule/acromio-humeral distances.Results FMA-UE, ARAT, ABILHAND and TIS scores increased in both groups, with greater increases in most parameters in the scapulo-humeral training group. Shoulder pain decreased only in the scapulo-humeral training group. Subacromial distances were decreased on the paretic side, and muscle thicknesses increased on both sides in the scapulo-humeral training group, and in the control group, only serratus anterior muscle thickness increased on the paretic side (p < 0.05 for all).Conclusions Additional scapulo-humeral exercises to conventional rehabilitation was seen to improve upper extremity/trunk performance and shoulder pain, and to increase scapula stabilizer muscle thicknesses in stroke individuals with mild-moderate upper extremity disability.