A comparative study of one-stage posterior unilateral limited laminectomy vs. bilateral laminectomy debridement and bone grafting fusion combined with internal fixation for the treatment of aged patients with single-segment spinal tuberculosis

Table 4 Cobb angle data in two groups

Groups	Kyphosis angle (°)			Correction Cobb angle(°)	Angle loss	Bone fusion time(mons)
	Preop	Postop	LF		Loss(°)
A	26.1 ± 9.1	12.1 ± 3.1	13.7 ± 2.5	16.7 ± 5.5	2.6 ± 1.2	8.2 ± 1.9
B	25.5 ± 8.4	11.7 ± 4.2	13.1 ± 3.3	15.7 ± 6.9	1.9 ± 0.9	7.8 ± 1.5
	P = 0.77	P = 0.73	P = 0.45	P = 0.81	P(0.01) < 0.05	P = 0.44

Postop Postoperative, Preop Pre-operative, LF Last follow-up
Thoracic and thoracolumbar spine: Correction Cobb angle = preoperative Cobb angle -postoperative Cobb angle; Angle loss = last follow-up Cobb angle- postoperative Cobb angle; Angle rate rate = angle loss/ correction Cobb angle
Lumbar spine: Correction Cobb angle = postoperative Cobb angle—preoperative Cobb angle; Angle loss = postoperative Cobb angle—last follow-up Cobb angle; Angle rate rate = angle loss/ correction Cobb angle

ISSN: 1471-2474