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Table 3 Results of categorized clinical factors by U analysis

From: Large medial meniscus extrusion and varus are poor prognostic factors of arthroscopic partial meniscectomy for degenerative medial meniscus lesions

Nominal variables

Final Lysholm score

P

Sex, n

 Male, 41

82.9 ± 10.3

0.188

 Female,45

86.0 ± 9.0

 

Cartilage status (Outerbridge classification)

  ≤ 2, 70

87.6 ± 7.4

0.000

  ≥ 3, 16

71.1 ± 6.8

 

occupational kneeling, n

 Yes, 8

81.5 ± 8.3

0.206

 No, 78

84.8 ± 9.8

 

K–L grade progression, n

 No progression, 48

89.4 ± 7.1

0.000

 Progression, 38

78.3 ± 9.1

 
  1. u-test
  2. K–L grade Kellgren–Lawrence grade