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Table 1 Basic characteristics of patients with ankylosing spondylitis

From: Treatment of kyphosis in ankylosing spondylitis by osteotomy through the gap of a pathological fracture: a retrospective study

Mean age (years) 36.8 (22–52)
Male/female 9/4
T9–T11 (n) 3
T11–T12 (n) 8
T12–L2 (n) 2
Low bone mineral density (n) 9
Average follow-up time (months) 25 (3–52)