Comparing the Incidence of Index Level Fusion Following Minimally Invasive Versus Open Lumbar Microdiscectomy.
Global Spine J
; 8(1): 11-16, 2018 Feb.
Article
em En
| MEDLINE
| ID: mdl-29456910
ABSTRACT
STUDY DESIGN:
Retrospective cohort study.OBJECTIVES:
To determine the incidence of index level fusion following open or minimally invasive lumbar microdiscectomy.METHODS:
We conducted a retrospective review of 174 patients with a symptomatic single-level lumbar herniated nucleus pulposus who underwent microdiscectomy via a mini-open approach (MIS; 39) or through a minimally invasive dilator tube (135). Outcomes of interest included revision microdiscectomy and the ultimate need for index level fusion. Continuous variables were analyzed with independent sample t test, and χ2 analysis was used for categorical data. A multivariate regression analysis was performed to identify predictive factors for patients that required index level fusion after lumbar microdiscectomy.RESULTS:
There was no difference in patient demographics in the open and MIS groups aside from length of follow-up (60.4 vs 40.03 months, P < .0001) and body mass index (24.72 vs 27.21, P = .03). The rate of revision microdiscectomy was not statistically significant between open and MIS approaches (10.3% vs 10.4%, P = .90). The rate of patients who ultimately required index level fusion approached significance, but was not statistically different between open and MIS approaches (10.3% vs 4.4%, P = .17). Multivariate regression analysis indicated that the need for eventual index level fusion after lumbar microdiscectomy was statistically predicted in smokers and those patients who underwent revision microdiscectomy (P < .05) in both open and MIS groups.CONCLUSIONS:
Our results suggest a low likelihood of patients ultimately requiring fusion following microdiscectomy with predictors including smoking status and a history of revision microdiscectomy.
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Base de dados:
MEDLINE
Tipo de estudo:
Incidence_studies
/
Observational_studies
/
Prognostic_studies
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Risk_factors_studies
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article