Patient selection

8 patients, 4 women and 4 men (mean age 33 years, range 24–53), were enrolled from a previously published RSA study [10]. All patients had been treated for a unilateral Lisfranc injury with a temporary, motion-preserving osteosynthesis [17]. Tantalum markers (0.8 mm diameter) were perioperatively inserted into the medial cuneiform and the proximal part of the 1st metatarsal. Minimum post-surgical time before inclusion in the current study was 5 years. On the contralateral, healthy foot, none of the patients had any midfoot deformities, prior to foot surgery, or sequelae after a previous foot injury. This study was reported in accordance with the STARD guideline.