Ober's Test for Iliotibial Band Length The Ober's test is the standard test to assess the length of the iliotibial band. Or is it??! The results of Willet et al. (2016) suggest that "Ober test assesses tightness of structures proximal to the hip joint, such as the gluteus medius and minimus muscles and the hip joint capsule, rather than the ITB". You can find the free full-text article here: https://www.ncbi.nlm.nih.gov/pubmed/26755689 You should take these findings into account when assessing y