AI Article Synopsis
- The study evaluates long-term patient outcomes and adjacent segment degeneration (ASD) after two surgical methods for treating isthmic spondylolisthesis.
- Both the posterior lumbar interbody fusion (PLIF) and posterolateral fusion (PLF) groups showed no significant differences in patient-reported outcomes.
- However, patients who underwent surgery reported worse physical function and higher levels of pain compared to a control group, with a notable prevalence of ASD following surgery.
Article Abstract
Background Context: Data on the long-term outcome after fusion for isthmic spondylolisthesis are scarce.
Purpose: To study patient-reported outcomes and adjacent segment degeneration (ASD) after fusion for isthmic spondylolisthesis and to compare patient-reported outcomes with a control group.
Study Design/setting: A prospective study including a cross-sectional control group.
Patient Sample: Patients with isthmic spondylolisthesis underwent posterior lumbar interbody fusion (PLIF) (n=86) or posterolateral fusion (PLF) (n=77). Patient-reported outcome data were available for 73 patients in the PLIF group and 71 in the PLF group at a mean of 11 (range 5-16) years after baseline. Seventy-seven patients in the PLIF group and 54 in the PLF group had radiographs at a mean of 14 (range 9-19) years after baseline. One hundred thirty-six randomly selected persons from the population served as controls for the patient-reported outcomes.
Outcome Measures: Patient-reported outcomes include the following: global outcome, Oswestry Disability Index, Disability Rating Index, and Short Form 36. The ASD was determined from radiographs using the University of California Los Angeles (UCLA) grading scale.
Methods: The chi-square test or analysis of covariance (ANCOVA) was used for group comparisons. The ANCOVA was adjusted for follow-up time, smoking, Meyerding slippage grade, teetotaler (yes/no) and, if available, the baseline level of the dependent variable.
Results: There were no significant patient-reported outcome differences between the PLIF group and the PLF group. The prevalence of ASD was 42% (32/77) in the PLIF group and 26% (14/54) in the PLF group (p=.98). The patient-reported outcome data indicated lower physical function and more pain in individuals with surgically treated isthmic spondylolisthesis compared to the controls.
Conclusions: PLIF and PLF groups had similar long-term patient-reported and radiological outcomes. Individuals with isthmic spondylolisthesis have lower physical function and more pain several years after surgery when compared to the general population.
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| http://dx.doi.org/10.1016/j.spinee.2018.08.008 | DOI Listing |
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