What is the term for an injury where the muscle fibers of the anterior thigh are stretched or torn?

The appropriate term for an injury involving the stretching or tearing of the muscle fibers in the anterior thigh is a quadriceps strain. A strain specifically refers to the injury of a muscle or tendon where the fibers are overstretched or partially torn, which is common in the quadriceps due to their function in hip flexion and knee extension.

In contrast, a quadriceps contusion refers to a bruise that results from a direct impact to the muscle, leading to bleeding and swelling, but does not involve tearing of the muscle fibers. A puncture is related to a wound caused by a sharp object penetrating the skin, and it does not pertain to muscle injuries. A fracture involves a break in a bone, which is a different type of injury altogether. Thus, a quadriceps strain accurately describes the specific nature of the injury to muscle fibers in the anterior thigh.