The palmar carpal ligament (also known as the volar carpal ligament) is a fibrous structure that forms the roof of Guyon's canal.
Proximally, it is continuous with the deep fascia of the forearm and attaches to the pisiform, pisiform ligamentous complex and a leaf of the flexor retinaculum over the hamate. It should not be confused with the flexor retinaculum, which forms the floor of Guyon's canal.
History and etymology
Jean Casimir Felix Guyon (1831-1920), a French anatomist and urologist was the first to describe Guyon's canal and the palmar carpal ligament in 1861 1,2.
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