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Table 1 Patients’ characteristics

From: Pedicle screw loosening: the value of radiological imagings and the identification of risk factors assessed by extraction torque during screw removal surgery

Patient characteristics Overall (n = 33)
Age (years) 38.2 (SD 13.8) (17 to 66)
Gender
 Females 10 (28%)
 Males 23 (72%)
Height (cm) 163.6 (SD 7.2)
Weight (kg) 61.9 (SD 14.3)
BMI (kg/m2) 22.9 (SD 4.0)
Diagnosis
 Facture 16
 Degenerative disc diseases 9
 Scoliosis 8
Number of patient with X-ray 33
Number of patient with CT scan 28
BMD (g/cm2) 0.98 (SD 0.13)
Osteoporosis 1
Persisting pain/foreign body sensation 18
 Recovery after removal surgery 16
Time to implant removal (months) 36.4 (18 to 77)
Surgical duration (min) 125 (SD 90)
Fusion in primary surgery 19
Hospital stay (days) 8.4 (SD 3.3)
  1. SD standard deviation, BMI body mass index, BMD bone mineral density