Trendelenburg gait is due to paralysis of: (DNB Dec 2010)
|A||Gluteus medium muscle|
|B||Gluteus minimum muscle|
|C||Gluteus maximum muscle|
Gluteus medius muscle
a. The body is prevented from falling to the other side, when a person stands on the limb by the contraction of glutei medius and minimum of same side.
b. If this abductor mechanism is defective, the unsupported side of pelvis drops resulting in positive Trendelenburg sign.
c. This sign is positive in pain on weight bearing (arthritis), weakness of glutei medius and minimus (poliomyelitis), shortening of the femoral neck, and dislocation or subluxation of hip joint.
Conditions resulting in Positive Trendelenburg Sign
i. Paralysis of the glutei medius and minimus due to injury of superior gluteal nerve
ii. Paralysis of the glutei medius and minimus due myopathy
iii. Congenital or acquired dislocation of hip
iv. Ununited fracture of neck of femur
v. Perthes' disease
vi. Coxa vara