ĐẶC ĐIỂM HÌNH ẢNH CỘNG HƯỞNG TỪ KHỚP VAI ĐỐI CHIẾU VỚI PHẪU THUẬT NỘI SOI TRONG CHẨN ĐOÁN RÁCH CHÓP XOAY KHỚP VAI

Abstract

Objective: This study aims to evaluate the magnetic resonance imaging (MRI) features in diagnosing rotator cuff (RC) tears of the shoulder joint, correlated with arthroscopic findings. Subjects and Methods: A cross-sectional, retrospective study was conducted on 106 patients with MRI scans and arthroscopic surgery results. Results: The supraspinatus tendon (SST) tear was the most common (97.17%), followed by infraspinatus tendon (IST, 16.03%), subscapularis tendon (SST, 13.33%), and the long head of the biceps tendon (LHBT, 4.71%). Among SST tears, 38.68% were partial-thickness (mainly articular-sided), and 58.49% were full-thickness, with 3–5 cm being the most frequent size. Associated findings included joint effusion (60.38%), subacromial space narrowing (32.08%), and bone marrow edema (7.55%). Compared to arthroscopy, MRI demonstrated high sensitivity and specificity in detecting partial-thickness SST tears (96%, 79%) and full-thickness SST tears (81.54%, 100%), with good Kappa agreement. However, diagnostic performance was limited for SCT and LHBT tears due to lower sensitivity. Conclusion: The study confirms the important role of MRI in diagnosing and classifying RC tears, effectively supporting treatment planning, particularly surgery. However, limitations remain in assessing less commonly involved tendons and small lesions.