Alkuk VI was a planet, the sixth planet of the Alkuk system, located in the galaxy's Alpha or Beta Quadrant.
History and specifics[]
In the 2250s or early 2260s decades, Doctor Leonard McCoy visited Alkuk VI, where for the first time he encountered a humanoid male suffering from complications arising from bicephaly. McCoy made history by performing a radical dichotomectomy, but the man's condition had degenerated past the point where he could be helped, and he did not survive the surgical procedure.
In 2274, Doctor Christine Chapel knew about the surgery on Alkuk VI, but not that McCoy performed it. (TOS comic: "Heads of State")