Is hallux rigidus hereditary?

In part. : Hallux rigidus is not clearly hereditary but there is probably some component that predisposes some to this problem. However, the major determinants are previous trauma to the joint and repetitive injury that accumulates over time.

Not usually: While some arthritic conditions can have a hereditary component, hallux rigidus doesn't usually. Trauma and mechanical factors often play a role in it's development.

It can be.: It can be but usually there are external environmental factors that contribute to the deformity.