Spine kinematics during gait are affected by prosthetic leg length

We measured self-reported low back pain (LBP), thorax-pelvis (TP) relative angles and lumbar-pelvis (LP) relative angles as people with a transtibial amputation (TTA) walked with leg length discrepancies (LLDs) of ±20 mm. TP and LP angles were similarly affected by LLDs in the frontal and transverse plane. Only the TP was affected in the sagittal plane. Although LLDs did not immediately affect self-reported LBP altered lumbar kinematics during walking over time has the potential to be associated with the development of LBP.