REF-919 · van der Worp et al., 2012 · Sports Medicine, Vol. · Paper · PubMed

Iliotibial band syndrome in runners: a systematic review

B+moderate evidenceMeasured on a mixed groupWritten before October 2026, being re-checked

Among runners, iliotibial band syndrome (ITBS) is described as the commonest injury on the outer (lateral) side of the knee, with an estimated incidence of 5% to 14%.

The reviewers searched MEDLINE, EMBASE, CINAHL, the Cochrane Library and Web of Science for work on its causes (aetiology), diagnosis and treatment in adult runners and analysed only studies scoring above 60% on quality. Evidence on aetiology was limited or conflicting, the clinical tests in use have not been validated in this group, and treatment studies disagreed.

The authors conclude that research on managing ITBS in runners is of poor methodological quality and that its results conflict strongly.

Participants

Adult runners (>18 years) in systematic reviews, clinical trials or observational studies of ITBS. The number of included studies and participants is not given in the abstract.

Protocol

Databases: CINAHL, EMBASE, MEDLINE, the Cochrane Library and Web of Science, plus reference lists.
Included: systematic reviews, clinical trials or observational studies in adult runners (>18 years) on the aetiology, diagnosis and/or treatment of ITBS; English, French, German or Dutch.
Two reviewers independently screened, assessed methodological quality and extracted data. Only studies with a quality score higher than 60% were analysed.

Key Results

Incidence of ITBS in runners: estimated between 5% and 14%.
Aetiology: the evidence is limited or conflicting, and whether weak hip abductors play a major role remains unclear.
Runners with ITBS seem to move and load the hip, knee and/or ankle/foot quite differently (kinematics and kinetics) from runners without it; but the biomechanical studies had small samples, and their data seem to be affected by participants' sex, height and weight.
Diagnosis: the clinical tests used to monitor ITBS have not been validated for this patient group.
Treatment: findings across articles disagreed. Running style and coordination of hip and knee look like the key factors; mobilization, hip-strengthening exercises and advice on shoes and running surface may also help runners.

Practical Application

A systematic review of ITBS in runners found the evidence on cause limited or conflicting — including whether weak hip abductors matter — the clinical tests unvalidated and the treatment studies inconsistent; the authors call the research quality poor. To "what fixes ITB pain?": no single treatment is established by this review; hip strengthening, mobilization, attention to running style and advice on shoes and surface are options the authors say runners "might" benefit from, not proven remedies.
Do not present hip-abductor weakness as the known cause. The review says its role is not clear.
Inference, not tested here: because the mechanical findings come from small studies comparing runners with and without ITBS, they cannot show whether the differences caused the injury or followed it.
Not from this paper; the base's own practice: the assistant does not name this condition from a description of lateral knee pain; it uses a clinician's diagnosis as given, and the load substitution and symptom-gated return rules are in SYNTH-73.

Limitations

Qualitative synthesis; no pooled estimate. The number of included studies is not in the abstract.
The included biomechanical studies were small and cross-sectional in nature (runners with vs without ITBS).
The authors rate the methodological quality of the field as poor; treatment statements are tentative.
Literature searched to the time of publication; later trials are not covered.
Written from the abstract and record metadata only (full text not read).
How this entry was checked and changed
Why this level

systematic search and quality appraisal, but qualitative synthesis of mostly small biomechanical and observational studies that the authors themselves rate as poor and highly conflicting