procedure these figs also further detail the orientation of the k wire hole 26 in relation to the other components of the invention the skeletal structure of an abnormal foot 28 is detailed in fig6 and clearly illustrates the presence of a hallux valgus condition defined by the outwardly protruding mtp joint at the juncture of the first metatarsal 32 and the first phalange bone 34 an additional characteristic of a hallux valgus condition is the presence of a medial eminence 30 which is an outwardly extending bone growth on the medial surface of the most forward end of the first metatarsal 32 the medial eminence 30 is a result of pressure created on the outside edge of the patient 39 s foot which in turn is a result of the outward deviation at the mtp joint a hallux valgus condition is clinically diagnosed by taking measurements of certain known bone relationships within a typical human foot the first of these is known as the hallux valgus angle 66 which defines the relationship between the intersection of the central bone line 82 of the first metatarsal 32 and the central bone line 82 of the first phalange bone 34 more specifically the hv angle 66 defines the deviation of the central bone line 82 of the first phalange bone 34 from that of the first metatarsal bone 32 an additional measurement that is very often used for diagnostic purposes is the im angle.