Learning Curve and Clinical Outcome of Biportal Endoscopic-Assisted Lumbar Interbody Fusion

<div>A nonparametric regression locally weighted scatterplot smoothing curve of operative time and day after the first biportal endoscopic-lumbar interbody fusion case (a, b). The slope of operative time flattened after the 34th case and 400th day.</div>

BioMed Research International

fig4

Figure 4

Figure 4: Learning Curve and Clinical Outcome of Biportal Endoscopic-Assisted Lumbar Interbody Fusion 