Pheasant MS, Coulter JL, Wallace C, et al. - This research investigated the hypothesis that leg length discrepancy (LLD) symptoms are elevated in patients who had undergone lumbar spinal fusion and total hip arthroplasty (THA), compared with patients with THA only. Researchers designed a retrospective cohort study including a total of 67 patients who had undergone lumbar spinal fusion and THA, along with 78 matched control patients who underwent THA only. Via telephone survey, perceived LLD symptoms were evaluated. The results indicate that after THA , frequencies of a perceived LLD, limping, and worsened back pain were increased in patients with THA and a spinal fusion compared with patients who had THA only, even in a population with HLD traditionally considered to be subclinical. The outcomes demonstrate that in patients with prior spinal fusion, precautions should be taken to avoid even minor LLD in the setting of THA.