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Table 1 Clinical information of the 11 cases associated with multilevel TOLF

From: Multilevel thoracic ossification of ligamentum flavum coexisted with/without lumbar spinal stenosis: staged surgical strategy and clinical outcomes

Case

Age(years)

Sex

Body Mass Index

Coexisting Disease

Symptoms duration (months)

Acute Exacerbation Duration (months)

Preoperative Symptoms

Urinary Dysfunction

Etiology of TSS

Number of Involved

Follow-up Period (months)

1

34

M

32.7

N

6

2

Spastic paraparesis, pyramidal signs, sensory dysfunction

N

OLF, DO

4

55

2

56

F

26.7

N

60

6

Low back and leg pain, lower limb numbness, sensory dysfunction

N

OLF

5

17

3

65

F

29.3

Y

120

2

lower limb numbness, spastic paraparesis, sensory dysfunction, sphincter dysfunction, pyramidal signs

Y

OLF, OPLL, DO

7

14

4

49

F

21.6

N

6

1

lower limb numbness, sensory dysfunction, spastic paraparesis, pyramidal signs

Y

OLF, OPLL, DO

8

23

5

58

F

29.7

Y

120

12

low back and leg pain, lower limb numbness, sensory dysfunction, pyramidal signs, sphincter dysfunction

Y

OLF, OPLL

9

21

6

30

M

35.1

N

6

3

lower limb numbness, sensory dysfunction, spastic paraparesis, pyramidal signs, sphincter dysfunction

Y

OLF, OPLL

9

14

7

54

F

30

N

6

3

low back and leg pain, lower limb numbness, intermittent claudication

N

OLF

4

18

8

61

F

29.6

N

13

9

low back pain, lower limb numbness, sensory dysfunction, spastic paraparesis, pyramidal signs, sphincter dysfunction

Y

OLF, OPLL, DO

4

18

9

56

F

29.3

N

2

2

lower limb numbness, sensory dysfunction, pyramidal signs, sphincter dysfunction

Y

OLF, OPLL DO

9

13

10

54

M

21.9

N

36

0.3

lower limb numbness, sensory dysfunction, spastic paraparesis, pyramidal signs, sphincter dysfunction

Y

OLF, DO

13

28

11

35

M

41

Y

3

3

lower limb numbness, sensory dysfunction, pyramidal signs, sphincter dysfunction

Y

OLF, OPLL

5

12

Average

50.2

 

29.7

 

24.4

4.2

   

7

21.2

SD

11.8

 

5.5

 

36.3

4.1

   

2.9

12.2