Clinics in Shoulder and Elbow

Korean Shoulder and Elbow Society (대한견·주관절의학회)
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Evaluation of acromial spur using ultrasonography

  • Kim, Hyungsuk (Department of Orthopedic Surgery, Eunpyeong St. Mary‘s Hospital, College of Medicine, The Catholic University of Korea) ;
  • Choi, Syungkyun (Department of Orthopedic Surgery, Eunpyeong St. Mary‘s Hospital, College of Medicine, The Catholic University of Korea) ;
  • Park, Soo Bin (Department of Orthopedic Surgery, Eunpyeong St. Mary‘s Hospital, College of Medicine, The Catholic University of Korea) ;
  • Song, Hyun Seok (Department of Orthopedic Surgery, Eunpyeong St. Mary‘s Hospital, College of Medicine, The Catholic University of Korea)
  • Received : 2020.12.09
  • Accepted : 2021.01.24
  • Published : 2021.03.01
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Abstract

Background: The presence of an acromial spur implies a rotator cuff disorder due to impingement between the acromial spur and the rotator cuff. The purpose of the study was to observe acromial spurs using ultrasonography and to compare measurements between plain radiographs and sonograms. Methods: We retrospectively enrolled 51 consecutive patients with acromial spurs, which were interpreted on preoperative plain radiographs (supraspinatus outlet view and 30° caudal tilt) and preoperative sonograms. The ultrasonography transducer was held vertically and continuously moved laterally, which corresponded to the long axis of the long head of the biceps. The distance from the most distal margin of the original acromion to the most projected point of the acromial spur was measured. Results: No significant difference was found between the plain radiograph and ultrasonography measurements (p=0.186). A moderate to strong correlation was detected between the ultrasonography and supraspinatus outlet-view measurements (r=0.776, p=0.000). Conclusions: Anteriorly projected acromial spurs were well-visualized by ultrasonography. No discrepancy in acromial spur length was detected between the use of plain radiography (supraspinatus outlet view and 30° caudal-tilt view) and ultrasonography. The correlation coefficients between the plain radiography and ultrasonography measurements exceeded 0.7.

Keywords

References

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