Comparing Thoracic Extensive Laminoplasty (TELP) and Laminectomy in Treating Severe Thoracic Ligamentum Flavum Ossification: A Proposed Novel Technique and Case-Control Study

Table 1

Demographic characteristics ( or ).

Item	G1	G2	value
Sex,	Male: 35	Male: 39	0.686
	Female: 24	Female: 23
Age, years old			0.722
BMI, kg/m^2			0.453
Symptom, (%)
LB numbness	42 (71.2)	46 (74.2)	0.710
LB spastic paraparesis	28 (47.5)	33 (53.2)	0.526
LB sensory deficits	49 (83.1)	51 (82.3)	0.908
Gait instability	26 (44.1)	29 (46.8)	0.765
Urinary sphincter dysfunction	18 (30.5)	22 (35.5)	0.561
Blood loss, ml			0.220
Operating room time, hours			0.334
Follow-up time, months			0.271
Dural laceration,	0	17	——
Cerebrospinal fluid leakage,	0	17	——

BMI: body mass index; LB: lower limbs.