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An Anatomical Study of Nerves at Risk During Minimally Invasive Hallux Valgus Surgery
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Ground reaction force complexity in hallux valgus.
Maede Farzadi1, Mohammad Ali Sanjari2, Maryam Jalali1
1Rehabilitation Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Orthotics and Prosthetics, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran.
Clinical Biomechanics (Bristol, Avon)
|December 10, 2020
Summary
Hallux valgus, or bunions, reduces the complexity of ground reaction forces, indicating impaired foot function. Early conservative treatment is recommended to mitigate risks associated with this loss of complexity.
Area of Science:
- Biomechanics
- Clinical Gait Analysis
- Foot and Ankle Research
Background:
- Movement system complexity is crucial for clinical decision-making.
- Hallux valgus (bunions) may alter the complexity of ground reaction forces (GRF).
- Investigating the impact of footwear and foot side on GRF complexity in hallux valgus is important.
Purpose of the Study:
- To evaluate how hallux valgus grades affect GRF complexity.
- To determine the influence of footwear (barefoot vs. shod) on GRF complexity.
- To assess differences in GRF complexity between foot sides.
Main Methods:
- A case-control study included 120 females (30 healthy, 90 with hallux valgus).
- Hallux valgus severity was graded using the Manchester scale.
- GRF complexity was measured using weighted permutation entropy in barefoot and shod conditions for both feet.
Main Results:
- Hallux valgus significantly reduced GRF complexity (medium to large effect size).
- No significant differences in complexity were found among the three hallux valgus grades.
- GRF complexity decreased in healthy individuals when wearing footwear compared to barefoot (large effect size).
- GRF complexity was similar between the left and right feet.
Conclusions:
- Reduced GRF complexity in hallux valgus aligns with impaired biological system function.
- Early intervention with conservative treatments is suggested upon hallux valgus onset.
- Study findings can inform foot function evaluation, foot type classification, and footwear selection.
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