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Journal of the Korean Academy of Rehabilitation Medicine 2000;24(6):1136-1141.
Analysis of Hallux Valgus by Radiologic Foot Mapping.
Ko, Young Jin , Kim, Hye Won , Joa, Kyung Hee , Ryu, Keun Hyeong , Lee, Sung Ho , Moon, Seung Guk
Department of Rehabilitation Medicine, College of Medicine, The Catholic University of Korea.
Radiologic Foot Mapping을 이용한 무지외반증의 평가
고영진, 김혜원, 좌경희, 류근형, 이성호, 문승국
가톨릭대학교 의과대학 재활의학교실
Abstract

Objective
We used the radiologic foot mapping system to evaluate the characteristics of hallux valgus.


Method
We studied the radiographs of 47 feet of 29 patients who had the hallux valgus. The weight bearing foot AP and lateral views of both sides were taken. The hallux valgus angle, first and second, first and fifth, and second and fifth metatarsal angles were measured with conventional methods. In addition we measured metatarsus primus varus (MPV) and proximal first metatarsal inclination (PFMI) angles. On lateral views, we measured calcaneal pitch, talar pitch and arch depth. By mapping system, we marked T1 through T5, MH1 through MH5, MB1 through MB5, CC, TN and NC, respectively.


Results
The first and fifth metatarsal angles were significantly larger in the patients with hallux valgus (p<0.05). The metatarsus primus varus angle was significantly larger in the patients with hallux valgus (p<0.05). The X coordinates at T1 and MH1 were significantly larger in the patients with hallux valgus (p<0.05). The Y coordinates of the MB1, NC and TN were significantly larger negative values in the hallux valgus patients (p<0.05).


Conclusion
In hallux valgus, the first metatarsocuneiform joint is the site of origin of metatarsus primus varus. The lateral splaying was present from the 5th toe to tarsal bones in hallux valgus groups.

Key Words: Hallux valgus, Metatarsus primus varus, Metatarsocuneiform joint
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