1. Angled outward, bent or twisted outward, as in cubitus valgus, coxa valga, hallux valgus, and genu valgum.
2. A Latin adjective describing any joint in an extremity that is deformed, such that the more distal of the two bones forming a joint deviates away from the midline, as in knock-knee.

Valgus is a form of the adjective which is used only with masculine nouns [hallux valgus (s.), coxae valgae (pl.)]. With feminine nouns, the form valga is used [coxa valga (s.), coxae valgae (pl.)], and with neuter nouns, the form valgum [genu valgum (s.), genua valga (pl.)].

1. An inward slant of the thigh.
2. A deformity marked by lateral angulation of the leg in relation to the thigh; knock-knee.