What anatomical cause is linked to a lordosis deviation in prosthetic gait?

A lordotic deviation in prosthetic gait often occurs due to weakness in the hip extensors. In a properly functioning gait cycle, especially in individuals using a prosthesis, adequate strength in the hip extensors is essential for stabilizing the pelvis and maintaining an upright posture during the stance phase of gait. When the hip extensors are weak, there is insufficient control of the pelvic alignment, which can lead to an exaggerated anterior pelvic tilt and contribute to lordosis.

In this context, weakness in the hip extensors can impair the ability to maintain neutral spinal alignment, resulting in compensatory changes, such as increased lumbar lordosis. This biomechanical alteration can lead to an inefficient gait pattern and possible discomfort or further complications over time.