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Abstract
The first ray, including the hallux and first metatarsal, has historically been the most common location of congenital and functionally acquired deformities of the lower extremity. It has been the subject of extensive historical review and study as an untold number of authors and surgeons have directed their talents toward the comprehension and correction of the condition. But, few reports have been made on that subject in Korean population. So, we made a clinical and radilogical study of the hallux valgus angle (HVA), intermetatarsal angle (IMA) and hallux valgus in 200 Korean population. The results obtained were as follows:
1. The mean value of HVA was 14.8°±4.6° in male and 17.6°±5.4°in female. The mean value of HVA of the hallux valgus patient was 33°
2. The mesn value of IMA was 8.6°±1.9°in male and 10.2°±2.2°in female. The mean value of IMA of the hallux valgus patient was 14°
3. The incidence of hallux valgus was 11% in male, 37% in female and female was 77% of all hallux vslgus patient.
4. The family history of hallux valgus was found in 63% and 94% of patients has bilateral involvement.
5. The most common chief complaint was pain over the medial side of the first MP joint or base of the other metatarsal bone. Symptoms were not correlated with angle value.
6. In the first MP joint of hallux valgus by Piggott, the deviated joint was most common (52%).
7. In the three basic MP joint types by Haas, the round metatarsal head was most common.
8. DASA was ranged from 0°to 7°in normal persons and from 2°to 16°in hallux valgus patients.
9. PASA was ranged from 1°to 9°in normsl persons and from 3°to 35°in hallux valgus patient.
10. The tibial sesamoid displacement more than grade 4 by Haas rating system was found 63% of hallux valgus patients.
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