Capitellar Fracture (McKee’s Double Arc Sign)

A 24 years old female with h/o of fall on an outstretched left hand three weeks back on 12.4.2020 presented on 4.5.2020 with pain & stiffness on her left elbow. O/E Tenderness over the lateral aspect of the elbow. No neurological deficit. Mechanical block. Left Elbow X-ray AP and Lateral There is a semilunar fragment displaced anteriorly and superiorly suggestive of displaced fragment fracture of the capitellum and possible lateral half of the trochlea. McKee’s double arc sign.