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 1980. In the U.S., the album spent 11 weeks on the "Billboard 200" album charts and reached its peak position of No. 72 in February 1981. The 2010 rerelease also charted in the UK, reaching No. 63 in November of that year. "Sound Affects" was re-issued on 8 November 2010 as a 2 CD Deluxe Edition to celebrate its 30th Anniversary. All songs by Paul Weller except where stated Note ♠ – Tracks previously unreleased Sound Affects Sound Affects is the fifth studio album by British rock band the Jam. The cover art is a pastiche of the artwork used