“…This pelvic drop is frequently compensated by increased lateral trunk lean, shifting the body's centre of mass towards the stance limb and shortening the moment arm of the hip abductor muscles, resulting in a typical “Duchenne gait” (29) or “abductor lurch” (28) with the pelvis level or elevated on the non-supportive swing limb. When pain arises in the hip joint during walking, there is also compensatory trunk lean towards the supporting side with significant hip joint load reduction achieved by a combined sideways shift of the pelvis (30). These patterns of hip unloading mechanisms have also been observed in other hip conditions such as Legg Calvé Perthes Disease (LCPD) (31), congenital hip dislocation (32), and the relationship between severity of hip abductor muscle weakness and the amount of pelvic drop and compensatory lateral trunk lean has been demonstrated in patients with cerebral palsy (CP) (33).…”