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Table 2 Working activity according to the REFA classification

From: Sporting activity is reduced following medial reefing performed for patellar dislocation

REFA REFA pre-injury REFA at follow-up
Group 1 Group 2 Group 3 Group 1 Group 2 Group 3
Grade 0 63.5% (47) 52.3% (23) 69.2% (18) 54.1% (40) 40.9% (18) 57.7% (15)
Grade 1 23.0% (17) 36.4% (16) 30.8% (8) 28.4% (21) 45.5% (20) 42.3% (11)
Grade 2 6.8% (5) 9.1% (4) 0.0% (0) 10.8% (8) 2.3 (1) 0% (0)
Grade 3 5.4% (4) 0.0% (0) 0.0% (0) 5.4% (4) 6.8% (3) 0% (0)
Grade 4 1.4% (1) 2.3% (1) 0.0% (0) 1.4% (1) 4.5% (2) 0% (0)
  1. Grade 0: No employment