Trendelenberg sign is positive in paralysis of all except:
C i.e. Gluteus maximusGluteus medius and gluteus minimus muscles are dominantly (mainly) supplied by superior gluteal aery(deep branch); and gluteus maximus by inferior gluteal aery.The aeries of gluteal region arise directly or indirectly, from internal iliac aery. The main branches include 1) superior gluteal 2) inferior gluteal and 3) internal pudendal aery. Superior gluteal aery is the largest branch and supplies most of gluteus medius & minimus and superior pa of TFL (by deep branch) and 1/3,d of gluteus maximus (by superficial branch). Whereas the inferior gluteal aery supplies most (2/3n9 of the gluteus maximus.Abductors of hip are - 'Sho Tense Middle class Men' i.e. Saorius , Tensor fascia lata (both are accessory); Medius gluteus , Minimums gluteus (both are main abductors) and trendelenburg test is positive in defective abductor mechanism In paralysis of gluteus medius & minimus (i.e. injury to superior gluteal nerve) trendelenburg sign is positive not in paralysis of gluteus maximus (i.e. inferior gluteal nerve)Q
Gluteus medius
Gluteus minimus
Gluteus maximus
Tensor facia lata