Table 3 Comparison of outcomes between the Over-distraction and No-distraction groups.

From: The impact of over-distraction on adjacent segment pathology and cage subsidence in anterior cervical discectomy and fusion

 

Over-distraction

No-distraction

p value

Patient number

83

62

 

Age (years old)

53.7 ± 10.6

53.6 ± 13.6

0.94

Sex (M/F)

40/22

48/35

0.49

Total fused levels

116

90

 

Fused levels

0.61†

 1

50 (60%)

34 (63%)

 2

33 (40%)

28 (31%)

Cage materials

0.02†

 TM

34 (41%)

14 (23%)

 PEEK

49 (59%)

48 (77%)

Follow-up length (months)

33 ± 17

30 ± 16

0.34*

Successful fusion

74/83 (89%)

54/62 (87%)

0.79†

RASP

   

 Any progression

40/83 (48%)

9/62 (15%)

 < 0.001†

 Moderate (\(\ge\) 2 grades)

21/83 (25%)

4/62 (7%)

0.001†

CASP†

7/83 (8%)

0/62 (0%)

0.02†

Cage subsidence

39/83 (47%)

19/62 (31%)

0.04†

JOA score (SD)

   

 Preoperative

11.4 ± 2.1

11.8 ± 2.2

0.26*

 Postoperative

13.8 ± 2.1

13.7 ± 2.0

0.88*

 Final follow-up

14.5 ± 2.1

14.4 ± 1.9

0.83*

  1. *Mann–Whitney U-test.
  2. †Chi-square test.
  3. Age, follow-up length, and JOA score were presented as mean ± standard deviation.
  4. M: male; F: female; RASP: radiological adjacent segment pathology; CASP: clinical adjacent segment pathology; JOA score: Japanese Orthopedic Association score.
Back to article page