Review Question - QID 219524

A 10-year-old female presents to your pediatric orthopedic clinic for evaluation of bilateral cavovarus foot deformity. She was recently diagnosed with Charcot-Marie-Tooth by her pediatrician and neurologist. On evaluation, she has varus alignment of her hindfoot and a cavus arch which appears to be hindfoot driven based on her Coleman block test. She has tightness in her posterior heel cord. She denies having any pain currently. You recommend close follow-up and heel cord stretching but no immediate intervention. However, you do warn her that she is at a higher risk of having which of the following concomitant injuries?