To provide a sock which not only locally improves hallux valgus but also prevents and improves hallux valgus retroactively to the cause of onset of hallux valgus.SOLUTION: A first elastic stretchable portion covering the circumference of the ankle, a second elastic stretchable portion connected to the first elastic stretchable portion and formed in the vertical direction to cover the vicinity of the inner fruit, a second elastic stretchable portion connected to the first elastic stretchable portion A third elastic stretchable part formed in the vertical direction covering the vicinity of the outer malleolus and a central part covering both the back side and the sole side from at least the distal part of the metatarsal from the first metatarsal bone to the fifth metatarsal bone And a fifth elastic stretchable portion which is connected to the fourth elastic stretchable portion and covers the inner surface from the distal portion of the first metatarsal to the first toe, the second elastic stretchable portion Has greater stretch resistance than the third elastic stretchable portion and guides the subtalar joint in the outward direction and pushes the distal portion joint of the first metatarsal bone inwardly by the fourth elastic stretchable portion, Characterized in that the hallux is expanded inward by pulling the hallux inward by the stretchable portion.BACKGROUND OF THE INVENTION【課題】外反母趾の局所的な改善のみならず、外反母趾の発症原因に遡って外反母趾の予防及び改善を図る靴下を提供する。【解決手段】足首の周囲を覆う第1弾性伸縮部と、第1弾性伸縮部に接続し内果近傍を覆う上下方向に形成された第2弾性伸縮部と、第1弾性伸縮部に接続し外果近傍を覆う上下方向に形成された第3弾性伸縮部と、第1中足骨から第5中足骨までの中足骨の少なくとも遠位部から中枢部を甲側および足裏側ともに覆う帯状の第4弾性伸縮部と、第4弾性伸縮部に接続し、第1中足骨遠位部から母趾までの内側面を覆う第5弾性伸縮部とを有し、第2弾性伸縮部は第3弾性伸縮部よりも伸縮抵抗が大きく、距骨下関節を回外方向へ誘導するとともに、第4弾性伸縮部によって第1中足骨遠位部関節を内方へ押圧し、第5弾性伸縮部によって母趾を内側に引っ張ることで母趾を内側に拡開することを特徴とする。【選択図】図1
