Cobb angle below the fracture. The Cobb angle is the preferred method of measuring post-traumatic kyphosis in a recent meta-analysis of traumatic spine fracture classifications. Scoliosis cases with Cobb angles between 40 and 50 degrees at skeletal maturity progress at an average of 10 to 15 degrees during a normal lifetime. Cobb angles of more than 50 degrees at skeletal maturity progress at about 1 to 2 degrees per year. Those with Cobb angle of more than 60° usually have respiratory complications. Cobb angle The Cobb angle, named after the American orthopedic surgeon John Robert Cobb (1903–1967), was originally used to measure
900 Degrees on the Dance Club Songs chart the following year. UK CD Single German CD Single 900 Degrees "900 Degrees" is a song by German DJ and producer Ian Pooley. The song was released as a single from his sixth studio album, "Since Then", released in October 2001. Upon its release, the song peaked within the top 60 on the UK Singles chart and remained Pooley's highest-peaking UK single for more than a year, until his 2002 single "Piha" peaked higher. The song also entered the "Billboard" Hot Dance Breakouts Maxi-Single Sales chart, becoming his first chart entry there. "900 Degrees"