Article Figures & Data
Figures
- Figure 1
Flowchart of patients. AS, ankylosing spondylitis; DISH, diffuse idiopathic skeletal hyperostosis; MIS, minimally invasive surgery; SI, sacroiliac.
- Figure 2
Preoperative and 1 y postoperative computed tomographic images.
Tables
- Table 1
Clinical characteristics of patients undergoing minimally invasive surgery for ankylosing spondylitis.
Characteristics n Age at surgery, y, median (range) 73 (38–89) Sex, male 39 American Society of Anesthesiologists classification 1–2 17 3–4 26 Comorbidity Hypertension 23 Diabetes mellitus 10 Coronary artery disease 10 Lung disease 8 Asthma 5 Chronic obstructive pulmonary disease 3 Malignancy 7 Neurological disease Cerebellar ataxia 1 Dementia 2 Cerebrovascular disease 2 Alcohol abuse 4 Note: Data presented as n unless otherwise noted.
Operative Details n Surgery duration, min, median (range) 140 (80–300) Perioperative blood loss, mL, median (range) 100 (50–410) AO/OTA B2 2 B3 41 Level of fixation ≤5 24 6 15 ≥7 4 Trauma mechanism Low energy 33 High energy 10 Abbreviation: OTA, Orthopaedic Trauma Association.
Note: Data presented as n unless otherwise noted.
Complication n Medical complications Pneumonia 2 Pulmonary embolism 1 Paralytic ileus 1b Heart failure 2a,b Kidney failure 2a,b Deep venous thrombosis 1 Delirium 1 Surgical complications Superficial wound infection 1 Deep infection with screw loosening and revision 2 Mechanical failure 0 Pressure ulcer 1 Nonfusion at 1 y 1
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