KnotesFree Orthopaedic & FRCS notes, viva stations and higher order SBAs

Hallus varus

Must KnowFoot & AnklethinKbox SBA

Definition

  • Triplanar deformity
    • Supination of MTP J
    • Hyperextension MTPJ
    • Hyperflexion of IPJ

Causes

  • Primary (uncommon)
  • Secondary
    • Over correction of H Valgus
    • Club foot
    • Eq varus
    • NM
    • Trauma
    • Inflammation

Assessment

  • Beighton score
  • Flexibility of deformity
  • MT deformities
  • Gait
  • X Rays

Treatment

  • Strapping in valgus
  • Surgical
    • Soft tissue correction
      • Medial release and lateral plication
      • Abd H release
      • EHL/EHB transfer
    • Bony correction
    • Joint procedures
      • Arthrodesis
      • Resection arthroplasty

Written/reviewed by Kishore Puthezhath

Professor of Orthopaedics and Consultant Paediatric Orthopaedic Surgeon

FRCS (Tr & Orth) revision resource

Reviewed: September 2026