IT band syndrome is a common overuse cause of pain on the outside of the knee (and sometimes the hip) in runners and cyclists, related to repetitive load rather than a single injury.
Iliotibial (IT) band syndrome is a common cause of pain on the outside of the knee — and sometimes the hip — in runners, cyclists and other athletes. It is an overuse problem, usually triggered by training errors such as a sudden increase in distance or intensity, too little recovery, or running on uneven or cambered surfaces. Factors like weak hip and buttock muscles or reduced flexibility can contribute.
Assessment confirms the diagnosis, checks for contributing factors in the hip, leg and foot, and rules out other causes of lateral knee pain such as arthritis when the picture is unclear. Imaging is not usually required — this fits Choosing Wisely Australia advice against routine imaging for uncomplicated musculoskeletal pain.
The mainstay of treatment is load management and a progressive strengthening program, particularly for the hip abductor and gluteal muscles, alongside relative rest and, where appropriate, a short course of anti-inflammatory medication. For cases that persist despite appropriate rehabilitation, adjuncts such as focused shockwave therapy may be discussed, with an honest account of the evidence. Most people recover without needing surgery.