This is a commonly used investigation in pregnancy and the scanner used is fundamentally no different for musculoskeletal ultrasound. The procedure is therefore, quick and non invasive but requires personal interaction with the radiologist performing the investigation. It is useful in evaluating superficial structures especially, tendons, ligaments and muscle. It can be used to evaluate swellings or to guide needles for tissue biopsy, aspiration or local injection. You may find that your physiotherapist uses a similar device for treatment of sports injuries.