Table 3.

Prevalence of osteophytes and intradiscal calcifications

	% of intervertebral discs affected
	0–1 y (n = 5)	2–4 y (n = 8)	5–7 y (n = 14)	8–11 y (n = 11)
Calcifications
at L6–S1	0	0	1	27
at other levels	0	0	20	27
Osteophytes
at L6–S1	0	12	35	90
at other levels	0	0	0	0