What type of muscle change is characterized by 'contracture'?

The correct answer is characterized by an abnormal shortening of a muscle, which is indicative of contracture. Contracture occurs when muscle fibers shorten and lose their normal elasticity, leading to reduced range of motion and stiffness in the affected joint or muscle group. This change can be a result of various factors, including prolonged immobilization, neurological conditions, or scarring in the muscle tissue.

Understanding contracture is essential, especially in clinical settings where maintaining or restoring range of motion and functionality is important. It typically requires intervention such as physical therapy or stretching exercises to prevent further shortening and to promote muscle flexibility. The other options do not accurately define the phenomenon of contracture, as they describe different muscle conditions or properties unrelated to this specific alteration in muscle length.