Study Status: Completed
Recruit Status: Completed
Study Type: Observational
Official Title: Risk Factors for Proximal Junctional Kyphosis Assessment After Spinal Instrumentation
Brief Summary:
The surgical management of spinal deformities especially in adults is complex. The conventional surgical treatment of these deformations is a scope arthrodesis of the spine. The quality of the result depends on many variables such as the choice of the vertebrae to fuse, location and the number of implants, the type of material used or the type of correction maneuver used.
All these variables affect the surgical outcome and may be involved as a modifiable risk factor for possible postoperative complications. The study proposes to focus on the junctional kyphosis postoperative proximal (CJP or Proximal Junctional Kyphosis: PJK) 1. Their prevalence in adults ranges from 20% to 43% depending on the series (Yang and Cheng, 2003; Yagi, King and al.2012).
The radiographic definition of CJP's kyphosis with an angle> 10 ° measured from the lower plate of the proximal instrumented vertebra to the upper plate of the adjacent vertebra proximal not instrumented (Glattes and al.2005) 4; this measure is being compared to the pre operative data.
Either the CJP are asymptomatic and do not require revision surgery (Yagi King and al.2011) 5 either they are and thereby generate a revision surgery (Kim Bridwell and al.2008; Watanabe Lenke and al.2010) .
Several factors may potentially influence the development of the CJP. Among them, age, preoperative comorbidities, obesity, osteoporosis, lesions of the posterior elements, hybrid instrumentation, correction forces applied during surgery, sagittal balance pre and post operative degeneration joint capsules, etc. There are few studies on the identification and analysis of these risk factors; literature gives only single-center studies on small samples 10 with a single surgical procedure. Re