Scoliosis uses the 45 to 50° threshold as a result of the well-documented, plus or minus 5° measurement error that can occur while measuring Cobb angles. Surgeons who are specialized in spine surgery perform surgery for scoliosis. To completely straighten a scoliotic spine is usually impossible, but for the most part, significant corrections are achieved. The two main types of surgery are: One or both of these surgical procedures may be needed. The surgery may be done in one or two stages and, on average, takes four to eight hours. A 50-year follow-up study published in the "Journal of the American
Sound Affects was vindicated when "Start!" topped the British singles charts in its third week after entering at number 3. "Pretty Green" includes a funk bassline and rhythm with melodic guitar breaks and psychedelic sound effects. "That's Entertainment" is an acoustic ballad. "Boy About Town" and "Dream Time" include horns. In 2006, "Q" magazine placed the album at No. 15 in its list of "40 Best Albums of the '80s". NME ranked the album No. 487 on their list of 500 Greatest Albums of All Time. "Sound Affects" spent 19 weeks on the UK album charts, rising to No. 2 in late