alexa Hind-mid-forefoot Deformity in Hallux Valgus Deformity in Rheumatoid Arthritis: Radiographic Evaluation Grouped by Existence of Dorsal Dislocation of Second Metatarsophalangeal Joint
ISSN: 2161-1149

Rheumatology: Current Research
Open Access

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Research Article

Hind-mid-forefoot Deformity in Hallux Valgus Deformity in Rheumatoid Arthritis: Radiographic Evaluation Grouped by Existence of Dorsal Dislocation of Second Metatarsophalangeal Joint

Makoto Hirao1*, Hideki Tsuboi2, Shosuke Akita1, Tadashi Koga4, Masato Matsushita2, Shiro Ohshima3, Yukihiko Saeki3 and Jun Hashimoto2

1Department of Orthopaedics, National Hospital Organization, Osaka Minami Medical Center, Osaka 586-8521, Japan

2Department of Rheumatology, National Hospital Organization, Osaka Minami Medical Center, Osaka 586 8521, Japan

3Department of Clinical Research, National Hospital Organization, Osaka Minami Medical Center, Osaka 586 8521, Japan

4Department of Clinical Research, National Hospital Organization, Osaka Minami Medical Center, Osaka 586 8521, Japan

*Corresponding Author:
Makoto Hirao
2-1 Kidohigashi, Kawachinagano City
Osaka 586-8521, Japan
Tel: +81-721-53-5761
E-mail: [email protected]

Received date: February 19, 2013; Accepted date: April 19, 2013; Published date: April 22, 2013

Citation: Hirao M, Tsuboi H, Akita S, Koga T, Matsushita M (2013) Hindmid- forefoot Deformity in Hallux Valgus Deformity in Rheumatoid Arthritis: adiographic Evaluation Grouped by Existence of Dorsal Dislocation of Second Metatarsophalangeal Joint. Rheumatol Curr Res S17:002. doi: 10.4172/2161-1149.S17-002

Copyright: © 2013 Hirao M, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Hallux valgus deformity combined with dorsal dislocation of the second metatarsophalangeal joint is frequently observed in rheumatoid arthritis cases. However, hallux valgus deformity without lesser toe dislocation is also seen in rheumatoid cases. Dislocated second toe cause the loss of the lateral support on the hallux, suggesting the importance to confirm the state of lesser toe MTP joint when assessing the risk of HV recurrence after surgery, and there may be some differences in the mechanical transmission between hind-mid and forefoot based on whether dorsal dislocation of the MTP joint in the lesser toe is present, although findings are unclear. This study examined the relationship between radiographic findings from the hind, mid, and forefoot and hallux valgus angle in rheumatoid arthritis cases grouped based on the presence or absence of dorsal dislocation of the second metatarsophalangeal joint. X-rays of 160 feet and ankles with rheumatoid arthritis were evaluated for the first metatarsophalangeal Larsen grade, existence of second metatarsophalangeal dorsal dislocation, hallux valgus angle, intermetatarsal angle between the first and second intermetatarsals, shape of the first metatarsal head, position of the sesamoid, the metatarsus primus varus angle, diastasis between the base of the first and second metatarsals, angle between long axis of the talus and short axis of the navicular, internal arch angle, tibio-calcaneal angle, and calcaneal lateral offset. Based on Pearson product-moment correlation coefficient test, involvement of hindfoot deformity should always be considered when assessing hallux valgus deformity in rheumatoid arthritis patients. Although mechanism of mechanical transmission through hindfoot to Lisfranc joint seems to be different by the presence or absence of dorsal dislocation of the second metatarsophalangeal joint, Lisfranc looseness also must be considered when assessing hallux valgus including the surgery to avoid the progression or recurrence in rheumatoid arthritis cases. Dorsal dislocation of the second metatarsophalangeal joint strongly influences the exacerbation of hallux valgus in rheumatoid arthritis cases. Thus, it is may be important to achieve adequate reduction of the second metatarsophalangeal joint dislocation and make a stable metatarsophalangeal joint to avoid recurrence of hallux valgus after forefoot surgery in rheumatoid arthritis.

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