Table 4.
Correlation between Nurick grade and mJOA scores, changes in them and their recovery rates in different grades of myelopathy (Spearman’s rank correlation coefficient)
| Mild myelopathy(tmJOA score >12) (n = 42) | Moderate myelopathy (tmJOA score 9–12) (n = 43) | Severe myelopathy (tmJOA score <9) (n = 8) | ||||
|---|---|---|---|---|---|---|
| tmJOA | llmJOA | tmJOA | llmJOA | tmJOA | llmJOA | |
| Preoperative NG | 0.507** | 0.456 | 0.605** | 0.986** | 0.149 | 1.00** |
| Follow-up NG | 0.742** | 0.876** | 0.878** | 0.817** | 0.811 | 0.927** |
| Change in NG | 0.628** | 0.623** | 0.768** | 0.819** | 0.895 | 0.917** |
| Mild myelopathy(tmJOA score >12) (n = 42) | Moderate myelopathy (tmJOA score 9–12) (n = 43) | Severe myelopathy (tmJOA score <9) (n = 8) | ||||
|---|---|---|---|---|---|---|
| tmJOARR | llmJOARR | tmJOARR | llmJOARR | tmJOARR | llmJOARR | |
| NGRR | 0.721** | 0.862** | 0.857** | 0.806** | 0.905 | 0.902 |
NG Nurick grade, tmJOA total mJOA, llmJOA lower limb mJOA, NGRR Nurick grade recovery rate, tmJOARR total mJOA recovery rate, llmJOARR lower limb mJOA recovery rate
** Significant at p = 0.001