What is the condition called when there is an abnormal union of membranous surfaces due to inflammation or injury?

The condition referred to as an abnormal union of membranous surfaces due to inflammation or injury is known as adhesion. Adhesions are bands of scar tissue that can form between organs or tissues, often as a result of surgical procedures, infections, or injuries. These adhesions can cause structures that are typically separate to stick together, leading to potential complications such as pain, restricted movement, or impaired function of the affected organs.

This definition aligns closely with the process by which adhesions develop, highlighting their role in the body after injury or inflammation. Other terms such as syndesis, contracture, and fibrosis describe different biological processes. Syndesis generally refers to the joining of two surfaces or structures but is less specific to the pathological context of injury and inflammation. Contracture involves a shortening and hardening of muscles or connective tissue that often leads to loss of mobility, while fibrosis refers to the thickening and scarring of connective tissue which can occur in various situations including chronic inflammation, but does not specifically pertain to the anomalous union of surfaces as adhesions do. Thus, adhesion is the most accurate term for describing this condition.