Hallux Valgus Interphalangeus with Large Ossicle Formation: A Case Report

Area of Science:

• Orthopedic surgery
• Foot and ankle biomechanics
• Skeletal development

Background:

• Hallux valgus interphalangeus (HVIP) is a deviation of the distal phalanx from the proximal phalanx.
• Its multifactorial etiology includes developmental disturbances, external pressures, and joint biomechanics.
• Ossicles, bony growths, can be associated with foot deformities.

Observation:

• A case of HVIP in a 21-year-old woman with childhood onset is presented.
• The patient experienced pain exacerbated by walking and footwear.
• A large lateral ossicle was noted and considered a contributing factor to the HVIP.

Findings:

• Surgical correction involved Akin osteotomy, headless screw fixation, ossicle excision, and medial capsulorrhaphy.
• The interphalangeal joint angle improved significantly, from 28.69° pre-operatively to 8.93° post-operatively.
• The patient reported satisfaction with the surgical outcome and uneventful wound healing.

Implications:

• Akin osteotomy combined with ossicle excision proved effective for this HVIP case.
• Understanding the role of ossicles in foot deformities is crucial for surgical planning.
• Further research on foot ossicles can enhance the biomechanical understanding of deformity correction.