Скачать или смотреть Most important basics of biomechanics part-2|Hip Abductor Mechanism |Gluteus GAIT Biomechanics|Ishan

The gluteus medius and gluteus minimus are the two main hip abductors,support the opposition of the pelvis and prevents the pelvis from dropping. The superior gluteal nerve arises from contributions from the L4- S1 nerve roots.
A trendelenburg gait is an abnormal gait resulting from a defective hip abductor mechanism. The primary musculature involved is the gluteal musculature, including the gluteus medius and gluteus minimus muscles. The weakness of these muscles causes drooping of the pelvis to the contralateral side while walking.
Any pathology of the fulcrum, load, effort, or the lever which binds all three will lead to a positive Trendelenburg gait.

Failure of the fulcrum presents in the following conditions:

Osteonecrosis of hip

Legg-Calve-Perthes disease

Developmental dysplasia of the hip

Chronically dislocated hips secondary to trauma