In the event of trapezius muscle injury, which body area is affected?

• A. Knee
• B. Low Back
• C. Neck
• D. Hand

Answer: (C)

The trapezius muscle sits across the upper back and neck, spanning from the base of the skull and cervical spine down to the mid-back and attaching to the shoulder blade and collarbone. Its job is to move and stabilize the shoulder girdle and help with neck posture — shrugging the shoulders, retracting the shoulder blades, and extending the neck. When this muscle is injured, the most common and direct area affected is the neck (and the upper back/shoulder region) because the injury directly involves the muscle that supports those areas. The knee, low back, or hand aren’t primary sites tied to trapezius function, so they’re much less likely to be the affected area.