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KMID : 1036220230260040390
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Clinics in Shoulder and Elbow
2023 Volume.26 No. 4 p.390 ~ p.396
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Glenohumeral versus subacromial steroid injections for impingement syndrome with mild stiffness: a randomized controlled trial
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Kim Yong-Tae
Kim Tae-Yeong
Lee Jun-Beom
Hwang Jung-Taek
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Abstract
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Background: The subacromial (SA) space is a commonly used injection site for treatment of impingement syndrome. For shoulder stiffness, glenohumeral (GH) injections are commonly performed. However, in cases of impingement syndrome with mild shoulder stiffness, the optimal site of steroid injection has yet to be identified.
Methods: This prospective, randomized study compared the short-term outcomes of ultrasound-guided GH and SA steroid injections in patients who were diagnosed with impingement syndrome and mild stiffness. Each group comprised 24 patients who received either a GH or SA injection of 40 mg of triamcinolone. Range of motion and clinical scores were assessed before and 3, 7, and 13 weeks after the injection.
Results: GH and SA injections significantly improved the range of motion and clinical scores after 13 weeks of follow-up. Notably, targeting the GH joint resulted in an earlier gain of forward elevation, external rotation, and internal rotation in 3 weeks (P<0.001, P=0.012, and P=0.002, respectively) and of internal rotation and a Constant-Murley score in 7 weeks (P<0.001 and P=0.046). Subsequent measurements were similar between the groups and showed a steady improvement in all ranges of motion and clinical scores.
Conclusions: GH injections may be more favorable than SA injections for treatment of impingement syndrome with mild stiffness, especially in improving the range of motion in the early period. However, the procedures showed similar outcomes after 3 months.
Level of evidence: I.
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KEYWORD
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Shoulder impingement syndrome, Adhesive capsulitis, Intra-articular injection, Subacromial injection, Steroid injection
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