Is laminectomy and fusion the better choice than laminoplasty for multilevel cervical myelopathy with signal changes on magnetic resonance imaging? A comparison of two posterior surgeries

Table 1 The relevant data of patients and outcomes

Characteristics	LF Group	LP Group	P Value
Cases	52	52
Age (years old)	59.62 ± 8.46	57.35 ± 7.18	0.14^a
Sex (male/female)	24/28	27/25	0.56^b
Tobacco use (yes/no)	20/32	23/29	0.55^b
Operation levels	3.87 ± 0.67	3.79 ± 0.73	0.56^a
HSIR	2.26 ± 0.31	2.38 ± 0.37	0.08^a
Duration of pre-operative symptoms (months)	5.85 ± 2.72	5.21 ± 2.64	0.23^a
With OPLL (yes/no)	19/33	14/38	0.29^b
Operative Time (minutes)	158.17 ± 18.33	149.73 ± 15.56	0.01^a
Intraoperative Blood Loss	225.84 ± 25.90	213.51 ± 47.98	0.11^a
Pre-operation
JOA	11.62 ± 1.21	12.03 ± 1.41	0.11^a
VAS-N	4.04 ± 1.34	3.68 ± 0.92	0.11^a
SF-36(PCS)	34.29 ± 13.87	37.05 ± 11.43	0.27^a
SF-36(MCS)	36.76 ± 10.34	38.17 ± 11.59	0.51^a
ROM of Extension and Flexion(°)	42.26 ± 12.35	45.88 ± 14.24	0.17^a

HSIR high signal intensity ratio
JOA Japanese Orthopedic Association score
OPLL Ossification of the posterior longitudinal ligament
VAS-N Visual Analogue Score of Neck
SF-36 (PCS and MCS) The Physical and Mental Component Scores of the Short-Form 36
ROM Range of Motion
^aT-test
^bChi-square test

ISSN: 1471-2474