AE	Adverse event
ALIF	Anterior interbody fusion
AO	Arbeitsgemeinschaft für Osteosynthesefragen
ALL	Anterior longitudinal ligament
ASA	American Society of Anesthesiologists
ASD	Adjacent segment degeneration
C7 SVA	C7- sagittal vertebral axis
CCI	Charlson Comorbidity Index
CT	Computed tomography
DISH	Diffuse idiopathic skeletal hyperostosis
EBL	Estimated blood loss
EMG	Electromyography
IRB	Institutional review board
LL	Lumbar lordosis
LLIF	Lateral lumbar (or thoracic) interbody fusion
LOS	Lengths of hospital stay
ODI	Oswestry Disability Score
PI	Pelvic incidence
PJF	Proximal junctional failure
PLIF	Posterior interbody fusion
PROM	Patient reported outcome measure
PT	Pelvic tilt
SD	Standard deviation
SL	Segmental lordosis
SPECT	Single photon emission computed tomography
SS	Sacral slope
TDN	Therapy–Disability–Neurology
TL	Thoracolumbar
TLIF	Transforaminal interbody fusion
UPN	Unique patient number
VAS	Visual Analogue Scale
VB	Vertebral body