title: Generalized Ligamentous Laxity; a Parameter Should not to be Forgotten in Preoperative Planning of Adolescent Idiopathic Scoliosis.
abstract: BACKGROUND
  Many factors effect on management (surgical and nonsurgical) of adolescent idiopathic scoliosis (AIS).
  
  
  OBJECTIVE
  The purpose of this study was evaluation of the effects of generalized ligamentous laxity (GLL) on surgical treatment of AIS.
  
  
  METHODS
  72 patients with AIS were studied between 2002 and 2009. 24 cases (33.4%) were placed in group A (normal) while 48 patients (66.6%) with GLL in group B. Our threshold for adding anterior approach was a curve which could not be corrected to < 50° on the supine lateral bending view.
  
  
  RESULTS
  The mean age and follow up period were 16.4 (12-22 years) and 3.8 (2-6.5 years), respectively. In the first group, 12 (50%) were operated with combined anterior and posterior approaches while in the later; there were only 6 (12.5%). Curve correction was 73.3% in patients with GLL and 57.1% in patients without it. Both of these differences were significant statistically (P = 0.001).
  
  
  CONCLUSIONS
  In preoperative planning of surgical treatment of AIS, GLL is an important factor. In this special group of patients due to much more flexibility, relatively larger scoliotic curves can be safely treated by single posterior approach.
authors: Orthopedic Research Center, Emam Reza Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
authors: Ebrahim
authors: E
authors: Ghayem-Hasankhani
authors: Farzad
authors: F
authors: Omidi-Kashani
keywords: Idiopathic; Ligaments; Operative; Scoliosis; Surgical Procedures
references: Br J Sports Med. 2004 Aug;38(4):457-60
references: 15273185
references: Spine (Phila Pa 1976). 2007 Aug 1;32(17):1869-74
references: 17762295
references: Spine (Phila Pa 1976). 2007 Mar 1;32(5):544-9
references: 17334288
references: Spine (Phila Pa 1976). 2002 Nov 1;27(21):2346-9
references: 12438982
references: Orthop Clin North Am. 2007 Oct;38(4):521-9, vi
references: 17945131
references: J Spinal Disord Tech. 2008 May;21(3):213-5
references: 18458593
references: Scoliosis. 2008 Sep 06;3:12
references: 18775076
references: J Pediatr Orthop. 2011 Jan-Feb;31(1 Suppl):S14-27
references: 21173615
references: Arch Phys Med Rehabil. 1996 Nov;77(11):1139-43
references: 8931525
references: J Orthop Sci. 2011 Mar;16(2):133-8
references: 21452083
references: Eur Spine J. 2011 May;20 Suppl 1:S68-74
references: 21416282