en Radiation Biology Radiation Biology تحقيق بديع Original Research <div style="text-align: justify;"><span style="font-size:10pt"><span style="text-justify:newspaper"><span style="text-kashida-space:50%"><span style="line-height:119%"><span style="font-family:Calibri"><span style="color:black"><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Background</span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-weight:bold"><span style="language:en-US">:</span></span></span></span></span> <span lang="en-GB" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-GB">To explore the value of two-dimensional color ultrasonography (US) in the evaluation of treatment effect of arthroscopic humeral insertion displacement for massive rotator cuff tears (MRCTs). </span></span></span></span><span lang="en-GB" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-GB">Materials and Methods: </span></span></span></span></span></span><span lang="en-GB" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-GB">From February 2021 to April 2022, 42 patients diagnosed as MRCTs by shoulder magnetic resonance imaging (MRI) were selected and separated into the control group (CG, n=21) and study group (SG, n=21). Patients in the SG received rotator cuff humeral insertion displacement and patients in the CG were treated with traditional suture bridge. The reliability of US imaging was examined and the clinical outcomes in two groups were compared. </span></span></span></span><span lang="en-GB" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-GB">Results: </span></span></span></span></span></span><span lang="en-GB" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-GB">The sensitivity and specificity of two-dimensional color ultrasonography reached 87.1% and 100% in detecting postoperative repair of MRCTs. Three months after surgery, compared with the CG, the university of California at Los Angeles shoulder rating scale (UCLA) scores in the SG were elevated (P<0.05), and the visual analogue scale (VAS) scores in the SG were declined (P<0.05). Degrees of external rotation, internal rotation, back extension and forward flexion of shoulder joint in both groups were increased after surgery, and those in the SG were higher relative to the CG (P<0.05). The retear rate of the SG was reduced compared with the CG (P<0.05). SG showed higher patient satisfaction rate compared with the CG (P<0.05). </span></span></span></span><span lang="en-GB" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-GB">Conclusion: </span></span></span></span></span></span><span lang="en-GB" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-GB">Two-dimensional color ultrasonography is a reliable approach to evaluate the repair of MRCT after arthroscopic rotator cuff internal displacement, which can reduce shoulder pain, improve patient life quality, and is valuable for promotion.</span></span></span></span></span></span></span></span></span></span></div> Color ultrasonography, arthroscopic surgery, massive rotator cuff tears. 125 130 http://ijrr.com/browse.php?a_code=A-10-1-1147&slc_lang=en&sid=1 S. Wu 7900319475328460025931 7900319475328460025931 No Department of Orthopedics, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou 363000, Fujian Province, China Z. Yu yzx830830830@163.com 7900319475328460025932 7900319475328460025932 Yes Department of Orthopedics, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou 363000, Fujian Province, China W. Lin 7900319475328460025933 7900319475328460025933 No Department of Orthopedics, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou 363000, Fujian Province, China W. Xu 7900319475328460025934 7900319475328460025934 No Department of Orthopedics, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou 363000, Fujian Province, China Y. Luo 7900319475328460025935 7900319475328460025935 No Department of Orthopedics, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou 363000, Fujian Province, China S. Guan 7900319475328460025936 7900319475328460025936 No Department of Orthopedics, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou 363000, Fujian Province, China