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(a) Fluoroscopic Grashey view of the position of the guide pin in a medial CAL cohort specimen. The position of the guide pin is medial to the medial margin of the greater tuberosity by a distance equal to the greater tuberosity width (GTW). (b) Position of the guide pin in a lateral CAL cohort specimen (narrowed GTW). (c) Position of the guide pin on the precipice view. CAL, coracoacromial ligament.
