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Official Journal of the Italian Society of Orthopaedics and Traumatology

Table 2 Preoperative imaging and laboratory findings preoperatively and 6 weeks postoperatively in patients with non-specific infection

From: Surgical treatment of sacroiliac joint infection

Case

Preoperative imaging

Preoperative lab

6 weeks postoperative

Radiographs

MRI

CT

WBC (/mm3)

ESR (mm/h)

CRP (mg/dL)

WBC (/mm3)

ESR (mm/h)

CRP (mg/dL)

3

Periarticular osteopaenia

Bone and iliacus and gluteal muscle oedema and abscess formation

13,700

70

87

8,400

12

21

5

Sclerosis and narrowing of joint space

Localised area of fluid in the joint

Sclerosis and cavitation

13,400

92

250

9,600

33

46

6

Normal

Abscess and oedema in gluteal muscle

10,600

89

117

7,100

19

57.2

7

Partially fused joint and localised area of cavitation

Localised cavity with fluid signal

7,800

79

27.5

9,000

83

18.7

8

Normal

Periarticular bone oedema, fluid signal in the joint and soft tissue

4,300

66

65.2

6,300

32

11.4

9

Narrow joint

Abscess formation and soft tissue and bone oedema

Joint narrowing and destruction

9,800

73

81.3

5,700

26

7.9

10

Sclerosis and cavitation

Posterior abscess formation

15,500

133

251.7

7,600

93

10.1

12

Normal

Periarticular oedema and fluid signal

19,700

64

255.4

8,700

55

13.3

13

Normal

Fluid signal in joint and bone oedema

10,900

83

90.5

6,900

64

16.9

14

Widening of the joint space

Fluid signal in the joint and periarticular oedema

Joint widening and sclerosis of the edges

12,200

128

135.1

7,900

29

12.6

15

Widening and cavitation of the joint surfaces

Abscess formation and bone and soft tissue oedema

Widening and localised cavitation

8,800

78

110

8,300

32

5.6

16

Wide joint with sclerosis

Abscess formation and soft tissue oedema

3,600

103

104

6,800

61

12.7

17

Wide joint

Tissue and joint fluid signal

Joint widening

11,800

74

153.2

7,600

71

55.6

18

Normal

Fluid in the joint and adjacent tissue anteriorly

13,600

86

79

27,400

51

65.3

19

Periarticular osteopaenia

Bone oedema and fluid signal in the joint

4,800

46

9.7

4,900

20

1.5

21

Normal

Fluid signal, periarticular and in the joint

10,100

77

258.7

7,300

39

16.8

22

Widening and cavitation

Abscess and soft tissue oedema posterior and anterior

Sclerosis and cavitation of the joint

5,000

38

7.6

5,900

73

13.1