Predictors of progression of XXXX after decompression of an Arnold @entity1645 .

@entity1 @entity1645 @entity1513 @entity16 @entity1635 @entity1274 @entity85
STUDY DESIGN: Retrospective study of @entity1 with @entity1635 and an Arnold @entity1645 requiring operative management. OBJECTIVES: Determine the factors that could predict whether a particular @entity85 might progress despite neurosurgical management of Arnold @entity1645 . SUMMARY OF BACKGROUND DATA: Few studies have documented the relationship between diagnosis and treatment of Arnold @entity1645 and associated @entity85 . Most studies mix @entity1274 and contain limited information about the @entity85 . METHODS: Medical records, radiographs, and magnetic resonance images of @entity1 were evaluated focusing on age and findings at presentation, characteristics of presenting and follow-up @entity85 , and the specifics of neurosurgical and orthopedic management. @entity1 were divided into two groups: those whose curves progressed >10 degrees or to surgical range (largest curve >45 degrees ) after neurosurgical intervention (progressors) and those whose curves stabilized or decreased (nonprogressors). RESULTS: Eight progressors presented at an average age of 11.4 years (range 2-19) and were followed for 6.3 years (range 2-15). Seven nonprogressors presented at 6.5 years of age (range 5-10) and were followed for 6.6 years (range 3.5-14). Neurosurgical procedures were equivalent in both groups; however, surgical revisions were required in 3 out of 8 progressors and 1 out of 7 nonprogressors. All progressors had a double @entity1635 curve; but only one nonprogressor had a double curve. Six out of 8 progressors and 0 out of 7 nonprogressors had a rotation >or=2+ and 50% of progressors had a @entity1513 >50 degrees compared to 1 out of 7 nonprogressors. CONCLUSIONS: In this series, progression of @entity85 after neurosurgical management of Arnold @entity1645 was associated with later age at neurosurgical decompressions and @entity16 , double @entity1635 curve patterns, @entity1513 , rotation, and larger curve at presentation.
