Surgical treatment of Lenke 5 adolescent idiopathic scoliosis: Comparison of anterior vs posterior approach

Table 1 Pre-operative radiographic and self-reported data for anterior and posterior thoraco-lumbar approaches for all cases, selective fusion, and selective fusions where distal level of fixation was the third lumbar vertebra for Lenke 5 curves

	All cases			Selective fusions only			Selective fusions where dLOF = L3
	Mean (SD)			Mean (SD)			Mean (SD)
	Ant (n = 40)	Post (n = 40)	P-value	Ant (n = 39)	Post (n = 20)	P-value	Ant (n = 25)	Post (n = 14)	P-value
Thoracic Cobb	28.7 (7.2)	29.2 (8.0)	0.759	28.3 (6.7)	26.8 (5.7)	0.395	27.6 (5.9)	25.6 (5.5)	0.313
Lumbar Cobb	46.9 (6.7)	47.1 (6.6)	0.880	46.8 (6.7)	48.0 (6.8)	0.0527	47.5 (7.1)	46.6 (6.8)	0.687
LSTOA	15.8 (4.7)	17.0 (5.7)	0.342	15.7 (4.8)	18.3 (6.3)	0.086	15.8 (4.8)	16.3 (4.8)	0.762
Thoracolumbar apical translation (centimeters)	5.0 (1.6)	5.4 (1.5)	0.241	5.0 (1.6)	5.6 (1.7)	0.214	5.2 (1.7)	5.5 (1.3)	0.521
Disc angulation below dLOF (degrees)	0.7 (6.2)	1.9 (5.4)	0.351	0.8 (6.2)	2.3 (5.4)	0.372	2.8 (6.3)	0.4 (4.5)	0.220
Proximal junctional kyphosis (degrees)	4.1 (5.7)	4.7 (4.6)	0.607	4.0 (5.8)	3.2 (2.6)	0.522	4.2 (6.4)	3.2 (2.7)	0.573
Kyphosis from T5-T12 (degrees)	25.7 (10.4)	24.8 (10.0)	0.719	25.7 (10.5)	24.9 (10.2)	0.756	24.4 (10.9)	25.6 (11.1)	0.743
Kyphosis from T10-L2 (degrees)	5.6 (11.3)	3.8 (8.7)	0.437	6.1 (11.0)	7.5 (7.5)	0.622	8.0 (11.7)	5.9 (7.2)	0.547
Lordosis from T12-top of Sacrum (degrees)	60.0 (12.2)	57.4 (10.8)	0.324	60.1 (12.3)	55.7 (11.5)	0.196	57.8 (12.9)	58.9 (8.0)	0.791
SRS (total)	3.9 (0.5)	4.0 (0.3)	0.463	3.9 (0.5)	4.1 (0.3)	0.371	3.9 (0.4)	4.1 (0.3)	0.305
SRS (self)	3.8 (0.7)	3.7 (0.6)	0.367	3.8 (0.7)	3.5 (0.6)	0.335	3.8 (0.5)	3.5 (0.6)	0.282
SRS (pain)	3.7 (0.7)	3.9 (0.6)	0.269	3.6 (0.7)	4.0 (0.4)	0.139	3.6 (0.6)	4.0 (0.4)	0.087
SRS (function)	4.0 (0.6)	4.1 (0.4)	0.469	4.1 (0.6)	4.2 (0.5)	0.392	4.2 (0.4)	4.2 (0.5)	0.691
SRS (activity)	4.5 (0.7)	4.6 (0.5)	0.576	4.5 (0.7)	4.6 (0.6)	0.572	4.5 (0.5)	4.6 (0.6)	0.496

LSTOA: Lumbo-sacral take-off angle; dLOF: Distal level of fixation; T: Thoracic; L: Lumbar; SD: Standard deviation.