Keywords: Extensor carpi ulnaris, Tendon subluxation. The extensor carpi ulnaris (ECU) is a muscle located in the human forearm that acts to extend and adduct the wrist. It crosses through the sixth dorsal compartment where it is held tightly to the ulnar groove by a subsheath.
1 March: Mars, the Roman god of war, 2  April: Roman month Aprilis, perhaps derived from aperire, (Latin to open, as in opening buds and blossoms) or perhaps from Aphrodite, original Greek name of Venus, 3  May: Maia, Roman goddess, mother of Mercury by Jupiter and daughter of Atlas,rigin of the Names of the Months. 1  January: Janus, Roman god of doors, beginnings, sunset and sunrise, had one face looking forward and one backward, 2  February: On February 15 the Romans celebrated the festival of forgiveness for sins; (februare, Latin to purify), 3  March: Mars, the Roman god of war,
Martius remained the first month of the Roman calendar year perhaps as late as 153 BC, and several religious observances in the first half of the month were originally new year's celebrations. Even in late antiquity, Roman mosaics picturing the months sometimes still placed March first.