The Phenice method is a technique of determining the sex of a human skeleton from the innominate pelvis. In the procedure, sex is determined based on three features: the ventral arc, the subpubic concavity, and the medial aspect of the ischiopubic ramus. As a non-metric absolute method, it relies on the recognition of discrete male and female traits. This makes the method objective, easily performable, and relatively quick (although this has been challenged by those seeking to improve the method). It is considered highly accurate, up to 96%, owing to the distinct biological differences between male and female anatomy in the pelvis, making it a highly useful method for those determining the sex of a skeleton.