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Table 1 Definition of the OF-Score in accordance to Blattert et al. [14]

From: Midterm outcome after posterior stabilization of unstable Midthoracic spine fractures in the elderly

OF-Score
Parameter Grade Points
Fracture classification type (OF 1–5) [11] 1–5 2–10
Bone mineral density T-score < − 3 1
Ongoing fracture process Yes; No 1; −1
Pain (under analgesia) VAS ≥4; < 4 1; −1
Neurological deficit Yes 2
Mobilization (under analgesia) No; Yes 1; − 1
Health status ASA > 3; dementia; BMI > 20 kg/m2; nursing case; anticoagulation Each −1; Max. -2
  1. Abbreviations: ASA American Society of Anesthesiologists risk classification, BMI Body mass index, VAS Visual analogue scale for pain, Max. Maximum
  2. 0–5 points: nonsurgical; 6 points: nonsurgical or surgical; > 6 points: surgical
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