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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