Medial Coracoclavicular Ligament: A New View with MRI

The medial coracoclavicular ligament, also known as Caldani's ligament, has been studied in detail anatomically. Yet, there's scarcely any mention of its imaging identification. So, researchers developed a unique MRI technique to spot this ligament. They scanned seven volunteers without known shoulder issues using a Philips Ingenia MRI machine with a strength of 1. 5 Tesla and an 8-channel shoulder coil. The ligament was found in all cases, stretching diagonally from the coracoid process to the clavicle, as described in anatomical texts. It showed up as a dark signal in all sequences, indicating dense collagen fibers. Its average length was 41. 15 mm, with a standard deviation of 4. 40 mm, and its average thickness was 2. 11 mm, with a standard deviation of 0. 66 mm. This new MRI technique opens doors for future research on ligament injuries and neurovascular compressions.