Table 2.

Radiological parameters in review.

Parameter	Number of studies	Number of patients	Number of levels	Average pre-op value	Average post op value	standard error of difference	P value
Lumbar Lordosis	28	829	1848	39.6	45.74	1.565	<0.0006
Segmental Lordosis	17	599	1132	6.9	9.9	1.214	0.0143
Scoliosis	18	749	2343	21.86	9.76	2.423	<0.0001
Segmental Scoliosis	6	175	368	6.17	2.87	1.072	0.0066
Disc Height	17	746	1059	5.43	9.03	0.711	<0.0001