Something Doesn't Look Right: Recognizing and Managing Limb-Length Discrepancy

Area of Science:

• Pediatric Orthopedics
• Musculoskeletal Disorders
• Developmental Pediatrics

Background:

• Leg length discrepancy (LLD) is a common pediatric musculoskeletal condition.
• Often underrecognized, LLD can lead to gait abnormalities, pain, and functional limitations.
• Clinically significant LLD is rare, but early detection is crucial for appropriate management.

Purpose of the Study:

• To review the causes, evaluation, and management of pediatric LLD.
• To provide guidance for pediatricians on recognizing and managing LLD.
• To emphasize the importance of routine screening and timely orthopedic referral.

Main Methods:

• Literature review of epidemiologic studies and clinical guidelines.
• Summary of diagnostic approaches, including physical examination and imaging interpretation.
• Discussion of management strategies based on growth potential and etiology.

Main Results:

• Up to 90% of children exhibit some leg length asymmetry.
• Clinically significant LLD requiring intervention is infrequent.
• Pediatricians often face uncertainty in diagnosing and referring LLD cases.

Conclusions:

• Routine screening during well-child visits is recommended.
• Accurate physical examination and timely referral are essential for progressive or symptomatic LLD.
• Effective counseling of families regarding LLD is vital for optimal outcomes.