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Table 3 Assessment of radiographic osteoarthritis grade of patellofemoral joint according to Iwano’s classification system at second-look operation compared with the initial operation

From: The effect of medial open wedge high tibial osteotomy on the patellofemoral joint: comparative analysis according to the preexisting cartilage status

 

Group 1

(n = 59)

Group 2

(n = 33)

P value b

Preoperative a

  

0.096

 Stage 0

10 (16.9%)

12 (36.4%)

 

 Stage 1

27 (45.8%)

13 (39.4%)

 

 Stage 2

22 (37.3%)

8 (24.2%)

 

Postoperative (Second-Look) a

  

0.124

 Stage 0

8 (13.6%)

10 (30.3%)

 

 Stage 1

25 (42.4%)

13 (39.4%)

 

 Stage 2

26 (44.1%)

10 (30.3%)

 

P value c

0.109

0.157

 
  1. a The values are given as the number of patients, with the percentage in parenthesis
  2. b Statistical significance was evaluated using Pearson’s Chi-squared or Fisher’s exact test
  3. c Statistical significance was evaluated compared with the preoperative measurement values using Wilcoxon signed rank test
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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