Musculus tensor fasciae latae

Origin: spina iliaca anterior superior, part of labium externum cristae iliacae

Insertion: tractus iliotibialis

Inervation: nervus gluteus superior (z L4–S1)

Function: flexion, abduction, internal rotation at the hip joint, maintains extension at the knee joint

Tractus iliotibialis : is a thickened tendon strip located on the lateral side of the thigh, to which the tensor fasciae latae muscle attaches from the front and the glutaeus maximus muscle from the back. It descends to the knee joint and attaches to the condylus lateralis tibiae, maintains the stability of the knee, and also fixes the lumbar joint.