Relationship of first metatarsal pronation correction with sesamoid bone reduction and intermetatarsal angle following the modified Lapidus procedure: A weight-bearing computed tomography analysis
Prospective cohort study investigates the relationship between metatarsal pronation correction and sesamoid alignment in hallux valgus treatment, suggesting intervention implications.
Key Points
This study aims to assess the correlation between first metatarsal pronation correction and sesamoid bone alignment post-modified Lapidus procedure.
Prospective cohort study involving 14 patients with hallux valgus treated with modified Lapidus procedure.
Evaluated weight-bearing computed tomography measurements of first metatarsal pronation and sesamoid bone position before and after surgery.
Performed correlation analysis between Alpha angle, intermetatarsal angle, and sesamoid measures.
Significant postoperative improvements in all weight-bearing computed tomography measurements were observed (p < 0.001).
A positive correlation was found between the change in Alpha angle and change in sesamoid rotation angle (p = 0.046).
The study indicates that merely correcting first metatarsal pronation may not suffice for full correction of varus and sesamoid reduction.