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Table 2 Clinical outcomes of patients with and without posterior heterotopic ossification

From: Effects of endplate coverage and intervertebral height change on heterotopic ossification following cervical disc replacement

 

Patients without PHO (n = 74)

Patients with PHO (n = 64)

P value

JOA score

   

 Preoperative

12.12 ± 0.83

12.14 ± 0.96

0.809

 Last follow-up

16.04 ± 0.73*

15.95 ± 0.67*

0.392

NDI score

   

 Preoperative

22.39 ± 3.13

22.55 ± 3.51

0.755

 Last follow-up

5.64 ± 0.61*

5.66 ± 0.60*

0.649

VAS score

   

 Preoperative

5.89 ± 0.48

5.86 ± 0.53

0.819

 Last follow-up

1.53 ± 0.50*

1.61 ± 0.49*

0.332

  1. PHO, posterior heterotopic ossification; JOA, Japanese Orthopedic Association; NDI, neck disability index; VAS, visual analogue scale
  2. *P < 0.05, compared with pre-operation
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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X