Are Bunions Hereditary? What You Need to Know. Bunions, medically known as hallux valgus, are a common foot condition that affects the joint at the base of the big toe. They are characterized by a bony bump on the side of the foot near the big toe, often accompanied by the big toe deviating towards the other toes. While bunions are typically associated with factors such as footwear choices and foot mechanics, many individuals wonder if there is a hereditary component to this condition. In this article, we explore the question: Can bunions be hereditary? We'll also discuss the role of genetics in bunion formation, including insights from experts at The Footwork Clinic. Understanding Bunions in the Big Toe Before delving into the hereditary aspect, let's briefly understand bunions and their causes. Bunions often develop when the bones and tissues surrounding the big toe joint become misaligned. This misalignment can lead to the joint pushing the big toe towards the other toes, resulting in the characteristic bony bump. Bunions can be painful and are typically associated with several factors, including: 1- Foot Mechanics: Irregular foot mechanics, such as overpronation (rolling inward of the feet), can contribute to the development of bunions. 2- Footwear Choices: Wearing shoes that are too tight, narrow, or have high heels can exacerbate the condition. 3- Injury or Trauma: In some cases, an injury or trauma to the foot can trigger the development of bunions.