Muscles of the hip the ilium. Together these muscles are commonly referred to as the "iliopsoas". This group consists of the externus and internus obturators, the piriformis, the superior and inferior gemelli, and the quadratus femoris. These six originate at or below the acetabulum of the ilium and insert on or near the greater trochanter of the femur. Additional muscles, such as the rectus femoris and the sartorius, can cause some movement in the hip joint. However these muscles primarily move the knee, and not generally classified as muscles of the hip. The hamstring muscles, which originate mostly from the ischial tuberosity inserting on
Behind the Front the album was "Karma", the album's second and final official single. All five music videos were included on the DVD "Behind the Bridge to Elephunk" (2004). "Behind the Front" received generally favorable reviews from music critics. Matt Conaway of AllMusic gave the album four out of five stars, stating: "Black Eyed Peas bring some positivity and fun back into hip-hop. Musically there is almost no realm this group does not touch -- right from the jump, the stylistic innocence of "Fallen Up," complete with striking guitar licks, sums up what BEP is all about." Behind the Front Behind the Front