Spontaneous Osteonecrosis of the Knee - SONK. Definition. 1  A condition of unknown aetiology characterized by the development of an area of osteonecrosis on the weight-bearing surface of the medial femoral condyle.  First described by Ahlback in 1968.
Funky Chicken may refer to:  1 Do the Funky Chicken, a 1969 song by Rufus Thomas. 2  The Chicken (dance), a 1960s-era American rhythm and blues dance.  Chicken Dance, an oom-pah song.
Experts in the history of dance believe that some of the Charleston's movements probably came from Trinidad, Nigeria, and Ghana. Its first appearance in the United States was around 1903 in Black communities in the South. It was then used in the Whitman Sisters stage act in 1911, and in Harlem productions by 1913.