Hallufix Day / Night Bunion splint and protector. Hallux valgus is a deformity of the big toe which produces a swelling of the bunion on the inside of the foot. It is a condition which frequently troubles many women even at a young age. At first, the deformity is viewed as merely a cosmetic problem, whereas the painful symptoms due to the developing arthritis frequently occur only in later years. Hallufix delays the development of this condition and assists with the reduction of pain. Replacement straps are available see below. Please click here for more details about Hallufix.