Real-Time Ultrasound/MRI Fusion for Suprasacral Parallel Shift Approach to Lumbosacral Plexus Blockade and Analysis of Injectate Spread: An Exploratory Randomized Controlled Trial

Table 1

Baseline and postblock muscle force as well as number of subjects with motor blockade of the femoral nerve, obturator nerve, and the lumbosacral trunk for ultrasound/MRI fusion guided versus ultrasound guided lumbosacral plexus blockade with the Suprasacral Parallel Shift technique. Values are displayed as median (IQR [range]) or number (proportion).

	()	()
Femoral nerve (knee extension)
Baseline muscle force; N	244 (204–266 [176–343])	229 (215–253 [136–374])
Postblock muscle force; N	75 (0–121 [0–244])	72 (0–134 [0–255])
Motor blockade	25 (96%)	24 (92%)
Obturator nerve (hip adduction)
Baseline muscle force; N	138 (114–176 [105–255])	134 (114–176 [101–237])
Postblock muscle force; N	0 (0–70 [0–149])	0 (0–31 [0–209])
Motor blockade	25 (96%)	24 (92%)
Lumbosacral trunk (hip abduction)
Baseline muscle force; N	147 (114–160 [79-204])	144 (114–167 [79–233])
Postblock muscle force; N	79 (35–105 [0–173])	54 (41–79 [0–169])
Motor blockade	24 (92%)	24 (92%)

Motor blockade was defined as a decrease in postblock muscle force compared to baseline.
: ultrasound.
: magnetic resonance imaging.