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Table 3 Results of studies (including ours) that have used osteotomies for correcting kyphosis in ankylosing spondylitis patients with pathological fracture (or pseudoarthrosis)

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

Author (year) No. of cases Surgical method Single-segment correction (°) Perioperative complications
Chang (2010) [34] 30 OWO 38 Postoperative pneumonia in 1 patient
Superficial infection in 1 patient
Kim (2007) [20] 12 SPO + AF or PSO + AF 24 and 31 Intraoperative dural tears in 3 patients
Leg pain with paresthesia in 2 patients
Qian (2012) [29] 7 PSO through pseudoarthrosis + AF 45 No complications
Our study 13 Osteotomy through pathological fracture gap without AF 31 Superficial infection in 1 patient
  1. OWO posterior opening-wedge osteotomy, SPO Smith-Petersen osteotomy, AF anterior fusion, PSO pedicle subtraction osteotomy