Hallux valgus can be classified as follows:
| Grade | HV angle (normal < 15°) |
IM-I-II angle (normal < 9°) |
MT sesamoid subluxation |
| Slightly | < 20° | < 12° | < 5° |
| moderate | 20-40° | 12-15° | 50-75° |
| heavy | > 40° | > 15° | > 75° |
HV: hallux valgusIM: intermetatarsal I-II angleMT: metatarsal I