Short-term predictive potential of quantitative assessment of spinal cord impairment in patients undergoing French-door Laminoplasty for degenerative cervical myelopathy: preliminary results of an exploratory study exploiting intraoperative ultrasound data

Table 1 Clinical and radiological data

Indicator	Result
number of cases	23
male	17
female	6
age at surgery (years)	62.09 ± 11.80
blood loss (ml)	190.91 ± 181.41
operative time (min)	196.18 ± 18.66
preoperative mJOA score	11.57 ± 2.67
mJOA score at postoperative 6 months	15.39 ± 1.50*
the RR of mJOA score (%)	71.11 ± 22.81
R_gray of IOUSI	2.12 ± 0.42
correlation coefficient of R_gray and the RR of mJOA score	−0.77 (P = 0.004)

mJOA score modified Japanese Orthopaedic Association score, RR recovery rate, R_gray the gray value ratio, IOUSI intraoperative ultrasound imaging, SCR signal change rate
*: compared with the preoperative mJOA score, P < 0.001

ISSN: 1471-2474