Lower crossed syndrome - weak muscles. Which muscles are commonly weak?

Lower crossed syndrome - weak muscles. Which muscles are commonly weak?

• A. Pectoralis major, anterior deltoid.
• B. Transversus abdominis, internal obliques, gluteus maximus, and gluteus medius.
• C. Quadriceps and gastrocnemius.
• D. Erector spinae and hip adductors.

Answer: (B)

Lower crossed syndrome involves an imbalance around the pelvis where the deep core and hip extensors are weak while the hip flexors and lumbar extensors are tight. The muscles that are commonly weak are the deep abdominal wall and the gluteal muscles: transversus abdominis and internal obliques provide core stability, while gluteus maximus and gluteus medius control hip extension and pelvis alignment. When these are weak, the pelvis tends to tilt forward and the lower back may extend more, contributing to low-back strain and poor movement efficiency. The other options point to muscles not typically part of this lower-trunk weakness pattern: chest and shoulder muscles, or muscles that are usually tight rather than weak in this syndrome. Strengthening the weak group helps restore stability and balance in the pelvis and spine.

Lower crossed syndrome involves an imbalance around the pelvis where the deep core and hip extensors are weak while the hip flexors and lumbar extensors are tight. The muscles that are commonly weak are the deep abdominal wall and the gluteal muscles: transversus abdominis and internal obliques provide core stability, while gluteus maximus and gluteus medius control hip extension and pelvis alignment. When these are weak, the pelvis tends to tilt forward and the lower back may extend more, contributing to low-back strain and poor movement efficiency. The other options point to muscles not typically part of this lower-trunk weakness pattern: chest and shoulder muscles, or muscles that are usually tight rather than weak in this syndrome. Strengthening the weak group helps restore stability and balance in the pelvis and spine.