A Study of the Radiologic Predictors of Curve Flexibility in Adolescent Idiopathic Scoliosis

Clamp, Jonathan A.; Andrews, John R.; Grevitt, Michael

doi:10.1097/bsd.0b013e3181379f19

Cited by 22 publications

(23 citation statements)

References 9 publications

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“…The influencing factors of the curve flexibility have been documented in several studies [6,7]. These factors were reported to include age, curve magnitude and curve location.…”

Section: Discussionmentioning

confidence: 99%

“…Clamp et al [6] reported a study of 101 idiopathic scoliosis patients through measurements on standing and fulcrum bending radiographs, and found that curve magnitude and age were the only significant predictors of curve flexibility. They discovered that curve location was also important in predicting flexibility with thoracolumbar curves being significantly more flexible than thoracic curves [6]. In theory, the increase in rigidity of thoracic curves might be due to the restriction of the chest wall.…”

Section: Discussionmentioning

confidence: 99%

“…One of the most important evaluations relates to the assessment of curve flexibility [6,7,11,13]. After understanding the flexibility of curves, spine surgeons are able to reasonably judge the rigidity of scoliosis, determine fusion levels and predict correction outcome.…”

Section: Discussionmentioning

confidence: 99%

“…After understanding the flexibility of curves, spine surgeons are able to reasonably judge the rigidity of scoliosis, determine fusion levels and predict correction outcome. Several types of curve flexibility assessment methods have been introduced previously, such as measurements on supine side bending [7,26], fulcrum bending [6,15] and traction films [11,16]. Evaluating the curve flexibility through measurement on supine side bending films is currently feasible and convenient [7].…”

Section: Discussionmentioning

confidence: 99%

“…Some studies have documented several factors, for example, age, curve magnitude and location, all of which serve to influence curve flexibility [6,7].…”

Section: Introductionmentioning

confidence: 99%

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Does brace treatment impact upon the flexibility and the correctability of idiopathic scoliosis in adolescents?

Sun

Liu

et al. 2012

Eur Spine J

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Purpose Brace treatment has served as a vital non-surgical procedure for immature adolescent idiopathic scoliosis (AIS) patients with a mild or moderate curve. For the patients who fail in bracing and resort to surgery, it is unclear whether prior full-time brace treatment significantly influences outcomes. This study aims to investigate whether prior brace treatment has a negative impact upon the flexibility and correctability of the main curve in patients with AIS. Methods The participants were collected from female AIS patients who underwent posterior correction surgery with pedicle screw instrumentation from August 2006 to December 2010, with or without prior brace treatment. Patients included in Group A had prior brace treatment over a 1-year period, and underwent surgery within 6 months after cessation of bracing; those in Group B received no prior treatment and were randomly selected from our database. Curve flexibility pre-surgery and curve correctability post-surgery were computed and compared between both groups and subgroups according to the curve location.Results Each group consisted of 35 patients. Age, curve magnitude and location were comparable between the two groups. Before surgery, patients in Group A had a slightly lower curve flexibility than those in Group B (52 vs. 60 %, P = 0.036). After surgery, satisfactory correction results were observed in both groups, but the average post-operative main curve magnitude of patients in Group B was 4°l ess than that of Group A (10°vs. 14°, P = 0.010). The curve correctability in Group B was significantly higher than that in Group A (80 vs. 74 %, P = 0.002). No matter what curve pattern the patient had, having a prior history of brace treatment resulted in a trend of lower flexibility and correctability of their scoliosis. Conclusions Good surgical correction can be achieved in AIS patients who have been unsuccessful with prior brace treatment. However, a history of prior brace treatment leads to a trend of lowering the curve flexibility, and in turn, negatively impacts upon the curve correctability.

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“…The influencing factors of the curve flexibility have been documented in several studies [6,7]. These factors were reported to include age, curve magnitude and curve location.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…Some studies have documented several factors, for example, age, curve magnitude and location, all of which serve to influence curve flexibility [6,7].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations