Sagittal spinopelvic changes after posterior spinal fusion in adolescent idiopathic scoliosis
| Autor: | Alexa J. Karkenny, Regina Hanstein, Jaime A. Gomez, Jacob F. Schulz, Denver A. Burton |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Orthodontics
030222 orthopedics business.industry medicine.medical_treatment Sagittal balance Idiopathic scoliosis Sagittal plane lumbar fusion 03 medical and health sciences 0302 clinical medicine medicine.anatomical_structure Spinal fusion Pediatrics Perinatology and Child Health adolescent idiopathic scoliosis medicine Original Clinical Article Orthopedics and Sports Medicine Lumbar spine sagittal balance business distal fusion 030217 neurology & neurosurgery PI–LL |
| Zdroj: | Journal of Children's Orthopaedics |
| ISSN: | 1863-2548 1863-2521 |
| Popis: | Purpose This article examines if longer posterior spinal fusions with instrumentation (PSFI) into the lumbar spine (L3/4) alter spinopelvic parameters compared with selective fusions to T12/L1/L2 in adolescent idiopathic scoliosis (AIS) patients. Methods We analysed radiographs of 84 AIS patients, 58 (69%) females and 26 (31%) males, who underwent PSFI at an mean age of 15 years ± 2.5 years, range 10 years to 21 years, between 1st January 2007 and 31st December 2014. Radiographic parameters were measured pre- and post-operatively at most recent follow-up (range 2 years to 8.2 years): pelvic incidence (PI), lumbar lordosis (LL, L1–S1 and L4–S1), sagittal vertical alignment (SVA), scoliosis angle and proximal junctional kyphosis (PJK). PI–LL was calculated. Data was analysed using t-tests or Wilcoxon rank-sum tests. Results In total, 32 patients underwent a selective fusion with lowest instrumented vertebra (LIV) T12–L2, and 52 patients underwent a fusion with LIV L3–L4. In both groups, scoliosis angle was significantly corrected at follow-up (p < 0.005). Pre-operatively, both groups had similar LL (L1–S1) and PI–LL. Post-operatively, LL increased in the L3–4 fusion group (p < 0.005) but did not change in the selective fusion group (p = 0.116). This change in LL in the L3–4 fusion group affected the post-operative PI–LL (T12–L2 fusion -4.9° versus L3–4 fusion -13.6°, p = 0.002). No differences were seen in PI, SVA or LL L4–S1 between groups. Radiographic PJK occurred in seven of the L3–4 patients with and without PJK (noPJK –8.8° versus PJK –25.8°, p = 0.026). Conclusions In patients who underwent a fusion ending at L3 or L4, LL was increased. This altered the PI–LL relationship, and appeared to increase the risk of PJK. Level of evidence III |
| Databáze: | OpenAIRE |
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