Ultrasound of Lateral Epicondylitis.

Clinical findings are generally sufficient to make the diagnosis of lateral epicondylitis of the elbow. Ultrasound (US), in conjunction with standard radiography, is a simple and cost-effective way to confirm the diagnosis, and it is also useful for eliminating most differential diagnoses and guiding treatment.US analysis of the muscle bodies and tendon laminae of the lateral epicondyle muscles, starting distally at the wrist and extending up to the lateral epicondyle, assists in understanding the complex fibrous architecture of the proximal tendons inserting on the lateral epicondyle. Pain when the US probe passes over an area of hypoechoic tendinosis, hyperemia in Doppler mode, and an intratendinous split are the signs to look for in patients. US helps guide needling or injection by targeting pathologic areas.Other examinations (computed tomography arthrogram and magnetic resonance imaging) are used as a second line of defense, particularly in cases of bone or joint pathology.