Skip to main content

Table 2 Comparison of surgical, postoperative and clinical evaluation data between the guide plate group and the conventional group

From: Application of 3D-printed osteotomy guide plates in proximal femoral osteotomy for DDH in children: a retrospective study

Observation indicators

Guide plate group (n = 16)

Conventional group (n = 20)

Statistics

P value

Operation time (total), hours

2.12 ± 0.13

2.69 ± 0.10

t =  − 14.605

< 0.001

Operation time (femoral side), hours

0.39 ± 0.08

0.70 ± 0.08

t =  − 11.635

< 0.001

X-ray fluoroscopy times (total), times

4.50 ± 1.03

8.70 ± 1.03

t =  − 12.136

< 0.001

X-ray fluoroscopy times (femoral side), times

2.56 ± 0.96

6.40 ± 0.99

t =  − 11.660

< 0.001

Intraoperative blood loss, ml

301.75 ± 31.61

370.95 ± 35.82

t =  − 6.063

< 0.001

Postoperative neck-shaft angle, °

121.31 ± 2.27

122.41 ± 1.94

t =  − 1.558

0.129

Postoperative anteversion angle, °

15.68 ± 0.97

16.03 ± 0.73

t =  − 1.233

0.226

Hospitalization time, days

12.25 ± 1.69

12.00 ± 2.00

t = 0.398

0.693

Hospitalization expenses, yuan

28,817.06 ± 1645.26

29,586.75 ± 2038.49

t =  − 1.224

0.229

Mackay clinical evaluation, n (%)

  

*

0.742

 Excellent

 Good

9 (56.25)

5 (31.25)

9 (45.00)

7 (35.00)

  

 Fair

2 (12.50)

4 (20.00)

  
  1. *Fisher's precision probability test