Limb Length Discrepancy (LLD) refers to a condition where one leg or arm is shorter than the other. While small differences are common and harmless, a significant difference in limb length can affect a child’s posture, balance, walking pattern, and even cause long-term joint issues if left untreated.
Causes of Limb Length Discrepancy in Children
1. Congenital (Present from Birth)
- Bone growth abnormalities.
- Developmental conditions like fibular hemimelia or congenital hip dislocation.
2. Acquired (Developed Later)
- Fractures affecting growth plates.
- Infections damaging bone growth centers.
- Bone tumors or treatments like radiation therapy.
- Neurological conditions affecting muscle and bone growth.
Signs & Symptoms to Watch For
- Limping or uneven walking.
- One hip or shoulder appearing higher.
- Frequent tripping or imbalance.
- Uneven shoe wear.
- Visible difference in leg length when lying down.
How Limb Length Discrepancy is Detected
1. Clinical Examination
A pediatric orthopedic doctor measures limb length using a tape measure or blocks under the shorter leg.
2. Imaging Tests
- X-rays to measure bone length accurately.
- CT or MRI scans in complex cases.
3. Gait Analysis
To assess how the difference affects walking and posture.
Treatment Options Based on Severity
Small Differences (< 2 cm)
- Often require no treatment—monitoring is enough.
- Shoe lifts or inserts may be used for balance.
Moderate Differences (2–5 cm)
- Shoe modifications or braces to improve posture and prevent strain.
- Growth modulation surgery – slowing growth in the longer limb to allow the shorter one to catch up.
Large Differences (> 5 cm)
- Limb lengthening surgery using specialized devices to gradually stimulate new bone growth.
- Rarely, shortening of the longer limb in certain cases.
Why Early Detection Matters
If untreated, significant LLD can lead to:
- Hip, knee, and back pain.
- Uneven joint wear leading to arthritis.
- Spinal curvature (functional scoliosis).
Key Takeaway:
Not all limb length differences need treatment, but early detection ensures the best outcome for your child’s growth, posture, and confidence. Regular check-ups with a pediatric orthopedic specialist can prevent long-term complications.
Clinic Address:
C-7, Ground Floor, D- Park, Model Town -3, New Delhi 110009
Call/WhatsApp: +91 88517 77145
Website: childorthocare.online
