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Table 4 Comparison of the VAS scores before, 1 week and 4 weeks after surgery between the two groups

From: Intramedullary core decompression combined with endoscopic intracapsular decompression and debridement for pre-collapse non-traumatic osteonecrosis of the femoral head

Time

Group A (n = 59)

Group B (n = 80)

T

P

Preoperative

6.3 ± 2.1

6.6 ± 2.5

0.7474

0.4561

1 Week after surgery

1.3 ± 1.1

3.6 ± 1.7

9.0800

0.0000

4 Weeks after surgery

1.5 ± 1.6

3.8 ± 2.1

7.0377

0.0000

3 Months after surgery

2.9 ± 1.3

4.0 ± 2.2

3.4231

0.0008

12 Months after surgery

3.1 ± 1.7

3.9 ± 2.1

2.4021

0.0176

  1. Bold idicates all P values with statistical differences
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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X