As children grow, parents often notice changes in the way their legs are shaped. Two common conditions that raise concern are knock knees and bow legs. While these terms describe different leg alignments, both are usually part of a child’s natural growth pattern. However, in some cases, they may point to underlying orthopedic issues that require medical attention.
This blog will help you understand what these conditions are, how to tell them apart, and when it’s important to seek treatment.
What Are Knock Knees?
Knock knees, medically called genu valgum, occur when a child’s knees angle inward and touch each other while the ankles remain apart.
Key points about knock knees:
- Commonly seen in children between 3 and 6 years.
- Often resolves naturally by around age 7–8.
- Usually painless and does not affect walking in mild cases.
What Are Bow Legs?
Bow legs, known as genu varum, occur when a child’s legs curve outward at the knees, creating a noticeable gap between the knees when the ankles are together.
Key points about bow legs:
- Common in infants and toddlers due to their natural posture before and after birth.
- Often improves by age 2–3 as the child starts walking and the legs straighten.
- Usually painless in early stages.
Key Differences Between Knock Knees and Bow Legs
| Feature | Knock Knees | Bow Legs |
|---|---|---|
| Leg Shape | Knees touch, ankles apart | Ankles touch, knees apart |
| Common Age Range | 3–6 years | Birth to 2–3 years |
| Natural Correction Age | 7–8 years | 2–3 years |
| Possible Causes | Normal growth, genetics, injury, rickets, obesity | Normal growth, rickets, bone diseases, injury |
When to Worry
While mild cases are often part of normal growth, you should seek a pediatric orthopedic evaluation if:
- The condition is severe or getting worse over time.
- Only one leg is affected.
- There is pain, swelling, or stiffness.
- Your child walks with difficulty or has frequent falls.
- The condition persists beyond the expected age for correction.
Possible Causes of Persistent Knock Knees or Bow Legs
- Rickets (Vitamin D deficiency)
- Bone growth disorders
- Injury to growth plates
- Genetic conditions affecting bone shape
Treatment Options
- Observation: In most normal cases, no treatment is needed except regular monitoring.
- Nutritional Support: Ensuring adequate Vitamin D and calcium intake.
- Physical Therapy: Exercises to strengthen muscles and improve alignment.
- Orthotic Devices: Braces or special footwear in certain cases.
- Surgery: Rarely required, only in severe cases not improving with growth.
Final Word for Parents
Knock knees and bow legs are usually part of the natural growth process in children, and most cases correct themselves without any intervention. However, if the condition is severe, painful, or persistent, consulting a pediatric orthopedic specialist ensures your child gets the right care at the right time.
Clinic Address:
C-7, Ground Floor, D- Park, Model Town -3, New Delhi 110009
Call/WhatsApp: +91 88517 77145
Website: childorthocare.online
