Why Does Weakness in the Quadriceps Femoris Lead to Forward

question 178

Multiple Choice

Why does weakness in the quadriceps femoris lead to forward lean of the trunk or hyperextension of the knee joint?

• A)The heel tends to slap down on the ground during initial contact
• B)Causes inability to adequately support loads or control knee extension
• C)Leads to instability of the patella and spasm of the surrounding tendons which cause postural misalignment
• D)Resulting excessive flexion in the knee and hip lead to this postural misalignment

---

Definitions:

Sacrum

A large, triangular bone at the base of the spine, formed by the fusion of vertebrae, and situated between the two hip bones.

Coccyx

The small, triangular bone at the base of the spinal column in humans, also known as the tailbone.

Erythrocyte

A type of blood cell that is biconcave in shape and primarily responsible for carrying oxygen from the lungs to the body's tissues and organs; commonly known as a red blood cell.

Hormone

Chemical substances produced by glands in the body that regulate the activity of cells or organs, influencing growth, mood, and metabolism.