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Diabetic Foot Ulcer01:31

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Changes in Foot Width in Minimally Invasive Bunionectomy.

Seif El Masry1, Grace M DiGiovanni1, Allison L Boden1

  • 1Department of Foot and Ankle Surgery, The Hospital for Special Surgery, New York, NY, USA.

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Summary

Minimally invasive bunionectomy (MISB) for hallux valgus (HV) reduces distal foot width but increases midshaft width. This study introduces novel midshaft measurements for a comprehensive understanding of foot changes post-MISB.

Keywords:
foot widthhallux valgusminimally invasive bunionectomyminimally invasive chevron akin

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Area of Science:

  • Orthopedic surgery
  • Podiatric medicine
  • Radiographic analysis

Background:

  • Minimally invasive bunionectomy (MISB) is a common procedure for symptomatic hallux valgus (HV).
  • Previous research primarily assessed distal foot width changes after MISB.
  • This study introduces novel midshaft measurements for a more complete evaluation of foot width alterations post-MISB.

Purpose of the Study:

  • To evaluate changes in both distal and midshaft foot width following MISB for hallux valgus.
  • To introduce and validate a novel midshaft measurement for assessing transverse foot width.
  • To correlate radiographic measurements of foot width with clinical deformity angles.

Main Methods:

  • Retrospective review of 44 hallux valgus patients undergoing MISB.
  • Collection of demographic data, surgical details, and radiographic measurements.
  • Measurement of hallux valgus angle (HVA), intermetatarsal angle (IMA), distal foot width, and novel midshaft foot width.

Main Results:

  • MISB significantly reduced distal foot width (average 8mm decrease, P<.001).
  • MISB significantly increased midshaft bony width (average 4mm increase, P<.001).
  • Distal foot width reduction correlated with HVA and IMA correction, while midshaft width changes did not.

Conclusions:

  • MISB effectively reduces distal foot width in hallux valgus patients.
  • A notable increase in midshaft foot width occurs on average after MISB.
  • Novel midshaft measurements provide valuable insights into the complex foot width changes following MISB.