Intermetatarsal angle

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An increased intermetatarsal angle is associated with hallux valgus,  metatarsus adductus and metatarsus primus varus deformities.

Measurement

The intermetatarsal angle is measured between the 1 and 2metatarsal shafts on an axial view of the foot.

Interpretation

  • normal: ≤9°
  • increased: >9°

Foot pronation can increase the intermetatarsal angle by ~3° .