| The Usefulness and Indications of Arthrosonography to Differentiate Full-thickness Tears from Partial-thickness Tears of the Rotator Cuff. |
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Baek, So Ra , Lee, Hee Dae , Lee, Shi Uk , Chung, Sun Gun |
1Department of Rehabilitation Medicine, Seoul National University College of Medicine, Korea. suncg@snu.ac.kr
2Department of Rehabilitation Medicine, Boramae Hospital, Seoul National University College of Medicine, Korea. |
| Arthrosonography의 유용성 및 적응증 |
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백소라, 이희대, 이시욱1, 정선근 |
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서울대학교 의과대학 재활의학교실, 1보라매병원 재활의학과 |
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| Abstract |
Objective
To investigate the usefulness and indications of arthrosonography by testing if the new technique could provide additional information on the degrees of rotator cuff tears when compaired to the findings of conventional ultrasonographic examinations.
Method
Thirty six patients, who were identified to have partial or full-thickness rotator cuff tears by conventional ultrasonography, were included. Intraarticular injection of 15 ml of fluid was performed via posterior approach under ultrasound-guidance, which was followed by arthrosonography.
Results
Among 26 patients with partial-thickness tear which was detected by the conventional ultrasonography, eight were identified to have full-thickness tears by the arthrosonography. Although the difference was not significant, the grade 3 partial-thickness tear in the conventional sonography had a higher rate of being identified as full- thickness tear in the arthrosonography than the grade 2 partial-thickness tears. The size of partial-thickness tear was increased after instillation of fluid in the arthrosonography.
Conclusion
Arthrosonography would be useful in differentiating partial- and full-thickness tears. When a tear of the rotator cuff tendon, especially a grade 3 partial-thickness tear, is detected in the conventional sonographic examination, an obscured full-thickness tear should be suspected and subsequent arthrosonographic procedure could be administered to clarify the extent of the lesion. Moreover, arthrosonography might be helpful in detecting partial-thickness tears by making them appear larger after instillation of fluid. (J Korean Acad Rehab Med 2007; 31: 742-749) |
| Key Words:
Rotator cuff tear, Shoulder ultrasonography, Arthrosonography, Shoulder arthrography |
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