Weak deep neck flexors lead to which scapular stabilizers being weak?

• A. Tight hip flexors
• B. Weak lower traps, serratus anterior and rhomboids
• C. Tight thoracolumbar extensors
• D. Weak deep neck flexors

Answer: (B)

Stability of the neck and shoulder blade relies on coordinated control across the trunk and upper body. When deep neck flexors are weak, the neck tends to lose its neutral alignment and forward head posture can develop. That altered alignment changes how the scapula sits on the rib cage and how the surrounding muscles fire, making the scapular stabilizers less effective. In this pattern, the lower trapezius, serratus anterior, and rhomboids become weak or poorly activated, compromising the scapulothoracic stabilization needed during arm movements. The other options don’t fit this neck–scapula link, and saying weak deep neck flexors describes the problem, not the downstream effect on scapular stabilizers.