Table 4 Outcome analysis related to presence of IFP edema

Case Number [n, (%), total n = 30]

10 (33.3%)

20 (66.7%)

Mean Age at Surgery [years]

30.9 (±10.4)

26.9 (±6.6)

P = 0.270

Mean Follow-up [years]

3.5 (±1.5)

4.5(±3.4)

P = 0,555

VISA-P score preop. [points]

48.3 (±9.4)

59.9(±12.3)

P  = 0.024*

VISA-P score postop. [points]

91.7 (±11.3)

97.3 (±5.3)

P = 0.184

Mod. Blazina score preop. [points]

4.4 (±0.7)

3.9 (±0.8)

P = 0.106

Mod. Blazina score postop. [points]

0.6 (±0.7)

0.2 (±0.5)

P  = 0.024*

Subjective Knee Function (SANE) preop.

33.5 (±16.0)

50.8 (±16.0)

P  = 0.016*

Subjective Knee Function (SANE) postop.

86.0 (±8.8)

94.3 (±7.5)

P  = 0.009*

Pain (VAS) preop.

6.5 (±1.5)

5.4 (±1.0)

P = 0.054

Pain (VAS) postop.

1.0 (±1.2)

0.3 (±0.8)

P  = 0.009*

Mean Time Period for Return to Sports [months]

6.5 (±3.8)

2.8 (±2.0)

P  = 0.003*