Age-Adjusted Alignment Goals Have the Potential to Reduce PJK

Autor: Eric O. Klineberg, Han-Jo Kim, Jensen K. Henry, Doug Burton, Steve Glassman, Bradley Harris, Robert A. Hart, Justin K. Sheer, Frank J. Schwab, Shay Bess, Christopher P. Ames, Breton Line, Renaud Lafage, Virginie Lafage
Rok vydání: 2017
Předmět:
Zdroj: Spine. 42(17)
ISSN: 1528-1159
Popis: STUDY DESIGN Retrospective cohort. OBJECTIVE To explore proximal junctional kyphosis (PJK) as a function of age-adjusted surgical correction goals. SUMMARY OF BACKGROUND DATA Recent adult spinal deformity (ASD) studies show that alignment targets are age-specific. Despite recognizing age and malalignment as PJK risk factors, no study has assessed the age-specific effects of alignment on PJK. METHODS ASD patients with fusions to the pelvis were included and stratified into three groups: young adults (YA 65 years old). Analysis of variance compared the groups with respect to 1-year postoperative alignments and 1-year offsets from age-specific alignment targets. RESULTS A total of 679 patients were enrolled (mean age = 61 years old, 77% female, body mass index = 28.1). At 1 year postoperatively, there was a significant decrease in pelvic tilt (PT; 29-23°), spinopelvic mismatch (pelvic incidence [PI]-lumbar lordosis [LL]) (28-5°), and sagittal vertical axis (SVA; 110-37 mm); overall incidence of PJK was 45.1%. Stratification by age (YA, n = 28; MA, n = 389; ED, n = 262) revealed an increase in PJK incidence with age: YA = 17.9%, MA = 43.8%, and ED = 50.2% (P
Databáze: OpenAIRE