This document describes the condition of Hallux Rigidus, which refers to arthritis in the big toe joint causing stiffness and loss of movement. Common causes include faulty foot biomechanics and overuse from certain jobs or activities. Symptoms progress from pain and stiffness with activity to pain at rest and difficulty walking. The management plan involves 3 phases. Phase 1 focuses on decreasing discomfort through heat/ice, stretches, and low-impact exercises. Phase 2 adds exercises to improve pronation and supination. Phase 3 emphasizes proprioceptive exercises. Progression is based on completing exercises with minimal effort and no pain.