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Adult Hallux Valgus

Aetiology

Metatarsus primus varus

- congenital hereditary factors 55 - 65% positive family history

Acquired

- Splayed foot secondary to weak intrinsics occurs with increasing age

- Effect of shoe-wear may not produce but contribute to the deformity

- Hallux valgus was 70 times more common among shoe wearers in Chinese Hong Kong as compared with the unshod members of the same community (Lam and Hodgson 1959)

Acquired

- Splayed foot secondary to weak intrinsics occurs with increasing age

- Effect of shoe-wear may not produce but contribute to the deformity

- Hallux valgus was 70 times more common among shoe wearers in Chinese Hong Kong as compared with the unshod members of the same community (Lam and Hodgson 1959)

Anatomical Considerations

  1. Distal Metatarsal Articular Angle (DMAA)
  2. Relationship of the distal articular surface in relation to the long axis of the 1st metatarsal
  3. Relationship of the proximal phalanx to the 1st metatarsal
  4. Is the 1st MTP joint congruent?
  5. Interphalangeal joint
  6. Is hallux valgus interphalangeus present?


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