What is the term for disorders that block the flow of urine, potentially injuring one or both kidneys?

The term that describes disorders which block the flow of urine, potentially leading to kidney injury, is indeed obstructive disorders. These conditions can arise from various causes, including anatomical abnormalities, stones, tumors, or strictures in the urinary tract, which lead to increased pressure in the kidneys. This pressure can cause damage to the renal tissues and impair kidney function if not addressed promptly.

Understanding obstructive disorders is critical, as they can lead to serious complications, such as hydronephrosis (swelling of the kidney due to a build-up of urine) and acute kidney injury. In contrast to the other options, which represent different categories of conditions affecting the urinary system and overall health, obstructive disorders specifically focus on the blockage aspect, which is essential in the context of urine flow and kidney health.