Definition

W-sitting is when a child sits on the floor with their knees bent, feet out to the sides, and hips internally rotated so the legs form a “W” shape.

Why Kids W-Sit:

Causes

• Increased femoral anteversion (inward twist of the thigh bone)
• Joint laxity or low muscle tone
• Provides a wide base of support, so it feels stable
• Avoids the need for active core engagement.
• Poor postural control

Problems with Excessive W-Sitting:

• Reduced trunk rotation
• Hip tightness
• Delayed balance development
• Knee-Foot Distortion
• Hip Distortion
• Less Cross-body coordination

Poor core strength and postural control

• Knock knees (genu valgum)
• Flat feet (pes planus)
• Reduced bilateral coordination and crossing midline

Common pattern chain:

W-sitting → Hip internal rotation → Knee collapse → Flat feet → Poor balance & posture

Consider physiotherapy input if:

• Multiple postures are present together
• Child avoids alternative sitting positions
• Frequent falls or fatigue
• Pain in legs, feet, or back
• Delayed gross motor skills

Interactive Activity

• Correct sitting alternatives:
• Cross-leg sitting
• Side sitting
• Long sitting
• “Sit switching” games

Home Tips:

• Gentle reminders (avoid scolding)
• Strengthen core through play (crawling, climbing)
• Use low chairs or stools

What Parents Usually Ask:

“Is W-sitting really bad?”
“My child always sits like this!”

Key Teaching Points:

✅ Occasional W-sitting is okay

🚩 Concern if:

• Child always chooses W-sit
• Poor balance or core strength
• Delayed gross motor skills
• Frequent falls