Effectiveness of Shortwave Diathermy for Subacromial Impingement Syndrome and Value of Night Pain for Patient Selection: A Double-Blinded, Randomized, Placebo-Controlled Trial

    loading  Checking for direct PDF access through Ovid



The aim of this study was to investigate the effectiveness of short wave diathermy (SWD) in patients with subacromial impingement syndrome.


In this double-blinded, randomized, placebo-controlled trial, 57 patients (aged 35–65 yrs) were classified into night pain positive (NP[+]) (n = 28) and night pain negative (NP[−]) (n = 29) groups. Both groups were randomly assigned to SWD (NP[+], n = 14; NP[−], n = 14) and sham (NP[+], n = 15; NP[−], n = 14) subgroups. Visual analog scale, Constant-Murley Scale (CS), and Shoulder Disability Questionnaire (SDQ) scores were used for evaluation.


There was only a significant difference in pain with activity at 1-mo (mean difference [MD], −1.65; 95% confidence interval, −3.01 to −0.28]) and 2-mo evaluations (MD, −2.1; 95% confidence interval, −3.51 to −0.69) between SWD versus sham groups. In the NP(+) SWD group, the CS pain score was significantly higher than in the NP(+) sham group at all evaluations after treatment. At 1 mo, the NP(−) SWD group showed significantly better pain, strength, total CS, and SDQ scores than the NP(−) sham group. At 2 mos, the pain, range of motion, strength, and total CS and SDQ scores were better in the NP(−) SWD group than in the NP(−) sham group (P < 0.05).


Short wave diathermy is more effective in subacromial impingement syndrome without NP.

Related Topics

    loading  Loading Related Articles