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[Hallux valgus--an atavism?].

K Klaue1

  • 1Reparto di Chirurgia Ortopedica, Clinica Luganese, sede Moncucco, Lugano. k.klaue@bluewin.ch

Therapeutische Umschau. Revue Therapeutique
|September 10, 2004
PubMed
Summary

Hallux valgus deformity is not an atavism, but rather a weakness in the modern human foot. This condition arises from evolutionary changes, not a return to ancestral traits.

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Area of Science:

  • Evolutionary Biology
  • Human Anatomy
  • Orthopedics

Background:

  • Atavism describes the reappearance of lost ancestral traits.
  • Human foot evolution shows a shift from a prehensile organ to a weight-bearing structure.
  • The first ray of the foot is crucial for stability but lacks strong ligamentous support.

Purpose of the Study:

  • To investigate whether Hallux valgus is a biological atavism.
  • To analyze the evolutionary changes in the human foot and their relation to Hallux valgus.
  • To identify factors contributing to Hallux valgus and evaluate treatment options.

Main Methods:

  • Review of phylogenetic evolution of the human foot.
  • In vitro and in vivo studies of tarso-metatarsal joint mobility.
  • Analysis of clinical pathology and contributing factors to Hallux valgus.
  • Evaluation of surgical treatment outcomes for Hallux valgus.

Main Results:

  • The human foot evolved from a prehensile organ to a loaded, less mobile structure.
  • Instability or hypermobility of the first ray is linked to Hallux valgus.
  • Factors like a long hallux and functional equinus foot exacerbate the deformity.
  • Surgical fusion of tarso-metatarsal joints is a logical treatment for severe Hallux valgus.

Conclusions:

  • Hallux valgus is not an atavism, as it doesn't reflect ancestral prehensile foot characteristics.
  • The deformity stems from a vulnerable point in the phylogenetically recent, overloaded human foot.
  • Understanding the evolutionary context is key to managing Hallux valgus.

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