Calcific tendinitis and associated inflammation of the rotator cuff is a frequently occurring disorder in which anti-inflammatory medication, exercise therapy and corticosteroid injection are recommended as first line treatments. More invasive techniques like shock wave and ultrasound guided needling (UGN) can be utilized prior to arthroscopy. But is UGN or shockwave preferable? Louwerens et al. examined this in a randomized controlled study from February 2020.