A semi-quantitative technique to assess excursion of the flexor hallucis longus

J. Michelson, Mitchell Tarka, S. Kanjiya

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Background: Recent research indicates that restriction in excursion of flexor hallucis longus (FHL) contributes to hallux rigidus development. As described in the literature, clinical evaluation of FHL excursion has poor interobserver reliability. A simple, inexpensive, easily used FHL relative excursion measurement device was developed and tested. Methods: 64 subjects were enrolled with shoe size, height, weight, BMI, and age compared. Using a footplate and series of mechanical wedges, maximum ankle dorsiflexion was measured with the great toe in 15°, 30°, and 45° of dorsiflexion. Results: Ankle dorsiflexion decrease with progressive hallux dorsiflexion increase was statistically significant with a linear correlation (r2 = .814 p < .001) and was not statistically related to shoe size, height, weight, BMI, or age. Conclusions: This technique provides consistent assessment of the limitation to ankle dorsiflexion incurred by decreased FHL excursion, establishing groundwork for future studies to assess the relationship between diminished FHL excursion and FHL pathology.

Original languageEnglish (US)
Pages (from-to)534-537
Number of pages4
JournalFoot and Ankle Surgery
Issue number4
StatePublished - Aug 2019
Externally publishedYes


  • FHL
  • FHL excursion
  • Flexor hallucis longus
  • Hallux rigidus

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine


Dive into the research topics of 'A semi-quantitative technique to assess excursion of the flexor hallucis longus'. Together they form a unique fingerprint.

Cite this