Al-Amiry B, et al. - In this prospective cohort study involving 213 patients, researchers assessed the impact of BMI on the radiological restoration of femoral offset (FO) and leg length as well as acetabular cup positioning. They considered patients with unilateral primary osteoarthritis (OA) treated with total hip arthroplasty (THA) between September 2010 and December 2013 for inclusion. The final analysis included patients with a mean BMI of 27.7 (SD 4.5). According to findings, increased BMI had a negative effect on post-THA leg length restoration but not on FO restoration or acetabular cup positioning. Age, gender, duration of OA or radiological severity and the experience of the surgeon showed no relation to post-THA FO restoration, leg length or positioning of the cup. There were no other variables in the model that influenced any of the primary or secondary results.