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Fig. 2 | BMC Musculoskeletal Disorders

Fig. 2

From: The clinical relevance of the presence of bridging syndesmophytes on kyphosis correction and maintenance following pedicle subtraction osteotomy for thoracolumbar kyphotic deformity in ankylosing spondylitis: a comparative cohort study

Fig. 2

a, b 28-year-old AS patient, with rigid thoracolumbar kyphosis yet the ALL remained unossified (GK: 45°, TK: 12°, LL: 5°, SVA: 12.6 cm, SS: 4°, PI: 36°). Following a PSO at L2 level, significant pre to post-operative improvements were detected concerning correction of GK, LL, SS and SVA (GK: 15°, TK: 14°, LL: -34°, SVA: 0.8 cm, SS: 19°). The contribution of adjacent disc wedging to total correction per PSO was 28.3% (c, d). At final follow-up, the GK, TK, SS and SVA deteriorated (GK: 35°, TK: 33°, LL: -35°, SVA: 5.6 cm, SS: 11°) (e, f)

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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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