Compartment syndrome (CS) can be defined as an acutely painful condition that occurs due to increased pressure within a compartment, resulting in reduced blood flow and oxygen to nerves and muscles within the limb. It is considered a surgical emergency, and a delayed diagnosis may result in ischemia and eventual necrosis of the limb. The majority of cases in adults are associated with high-energy trauma, more specifically, long bone fractures of the lower limb, while supracondylar fractures of the humerus are highly associated with CS in pediatric patients. CS may also develop gradually as a result of prolonged and ongoing physical activity such as running. In this narrative review, we discuss the anatomy, pathophysiology, methods of diagnosis, and effective management of CS in adults and children.