RunCalcs Injury Guide

IT Band Syndrome

Understand, rehab, and prevent outer knee pain.

IT band syndrome (ITBS) is the leading cause of lateral knee pain in runners. Irritation where the iliotibial band crosses the outside of the knee can derail training if ignored.

01Symptoms & Diagnosis

ITBS presents with:

  • Sharp or burning pain on the outside of the knee, often after a few miles.
  • Tenderness when pressing just above the knee joint.
  • Discomfort that worsens running downhill or after sitting long periods.
  • Pain that eases with rest but returns quickly when running resumes.

02Common Causes

  • Rapid increases in mileage or downhill running.
  • Weak hip abductors allowing the knee to collapse inward.
  • Excessive foot pronation or worn-out shoes.
  • Running on banked surfaces or always on the same side of the road.

03Immediate Care

Address symptoms early:

  • Rest: Reduce or stop running to calm irritation.
  • Ice: 10–15 minutes after activity to manage inflammation.
  • Stretch: Gentle IT band and hip stretches for relief.
  • Anti‑inflammatories: As advised by a medical professional.

04Rehab & Strength

Build resilience with progressive loading:

  • Side‑lying leg raises and clamshells to strengthen the hip abductors.
  • Single‑leg squats and step‑downs focusing on knee alignment.
  • Foam rolling along the outer thigh to reduce tightness.
  • Short bouts of easy running, increasing distance only when pain‑free.

05Prevention & Return

  • Increase training volume gradually and vary running surfaces.
  • Keep hips and glutes strong with regular strength sessions.
  • Rotate shoes and replace worn pairs promptly.
  • Resume running with walk‑run intervals; stop if pain persists.

If symptoms persist or worsen, consult a medical professional.

Last updated: September 4, 2025

Disclaimer: This article is general information only and not medical advice. Seek professional care for persistent pain.