Posterior-only vs. combined posterior-anterior approaches in treating lumbar and lumbosacral spinal tuberculosis: a retrospective study with minimum 7-year follow-up

Table 1 Arthritis grade for intervertebral disc degeneration (UCLA classification)

Grade	Disc-space narrowing	Osteophytes	End plate sclerosis
I	−	−	−
II	+	−	−
III	±	+	−
IV	±	±	+

The grade is based on the most severe radiographic finding evident on plain radiographs. Patients were rated based on the worst category satisfied.
+ present, − absent, ± either present or absent

ISSN: 1749-799X