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High-resolution ultrasound in the diagnosis of upper limb disorders: a tertiary referral centre experience.

The purpose of this study is to determine the reliability of high-resolution ultrasound (HRUS) in the diagnosis of upper limb disorders compared with the initial clinical opinion. We prospectively studied 178 patients referred for HRUS examination (47.2% hand, 34.8% wrist, and 18% elbow examinations) by recording the clinical opinion, the specific ultrasound diagnosis, and the final diagnosis, as established by surgery (79.9%) or follow-up (20.1%). HRUS examination was highly reliable in diagnosing cystic lesions, synovial disease, ligament injury and foreign bodies (100%), and slightly less reliable for solid lesions (82.1%) and nerve, bone, and tendon disorders (97%, 91.7%, 86.5%, respectively). HRUS examination resulted in significantly more correct diagnoses (92.1%) than the clinical opinion (70.8%) (McNemar test, P = 0.001). The agreement between the HRUS diagnosis and the clinical opinion was slight (Kappa test, k = 0.16). HRUS examination is more reliable than clinical examination in diagnosing upper limb disorders.

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