Wu CC, et al. - As controversies still exist regarding the optimal inlet for antegrade tibial intramedullary nailing, researchers conducted this retrospective study of MRIs of 100 consecutive adult patients (50 men and 50 women, average 27 years), in order to employ MRI to assess the optimal inlet for antegrade tibial nailing. They observed unique advantages and disadvantages in relation to the suprapatellar, parapatellar or infrapatellar approach for nail inlet. The widest support was achieved with the infrapatellar approach but the inlet is still unconvincing. With MRI verification in the current study, A site 3 mm laterally to the medial edge of the patellar tendon (PT) seems to the optimal inlet for antegrade rigid tibial intramedullary nailing. Men and women usually do not show any differences for the nail inlet. Modification may be required in the PT splitting approach for nail insertion.