[Deformity-associated treatment of the hallux valgus complex]

Hallux valgus represents a combined deformity with malpositioning of the big toe in the metatarsophalangeal joint and metatarsal splaying due to metatarsus primus varus formation. It is defined on the basis of joint condition of the metatarsophalangeal and tarsometatarsal (TMT) joints, the extent and congruence or incongruence of malposition, mobility of the metatarsophalangeal joint and TMT stability. Basic resection appears to be indicated only in exceptional cases. Depending on the degree of severity, deformities can be corrected by means of distal, diaphyseal or proximal osteotomies and TMT arthrodeses. Any correction requires the use of subtle soft tissue surgery with recentering of the tendon, tightening of the medial capsule and abductor hallucis and releasing the lateral capsule. A check-list-like analysis of hallux valgus deformity helps determine the ideal procedure and avoid over- or under-treatment.