Predicted %TBW by orthopaedic surgeons and rehabilitation professionals, and actual values demonstrated by the ‘educated patient’ for TTWB. %TBW, percentage of total body weight; TTWB, toe touch weight bearing. Predicted %TBW by orthopaedic surgeons and rehabilitation professionals, and actual values demonstrated by the ‘educated patient’ for TTWB. %TBW, percentage of total body weight; TTWB, toe touch weight bearing. Stephen G Thompson et al. BMJ Open Sport Exerc Med 2018;4:e000326 ©2018 by BMJ Publishing Group Ltd