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Table 4 Location and severity of concomitant cartilage injuries at primary and revision anterior cruciate ligament reconstruction

From: Comparison of concomitant injuries and patient-reported outcome in patients that have undergone both primary and revision ACL reconstruction—a national registry study

 Primary ACL reconstruction (n = 1014)aACL revision (n = 1014)bChange from primary ACL reconstruction to revisionp valuec
Highest ICRS on any location
 No injury828 (81.7%)658 (65.1%)Decrease 75 (7.4%)
Equal 671 (66.5%)
Increase 263 (26.1%)
< 0.001
 ICRS 1-2150 (14.8%)259 (25.6%)
 ICRS 3-435 (3.5%)93 (9.2%)
Patella
 No injury984 (97.1%)941 (93.2%) < 0.001
 ICRS 114 (1.4%)30 (3.0%)Decrease 18 (1.8%)
Equal 931 (92.3%)
Increase 60 (5.9%)
 ICRS 214 (1.4%)28 (2.8%)
 ICRS 31 (0.1%)10 (1.0%)
 ICRS 40 (0.0%)1 (0.1%)
Tibial plateaus
 No injury961 (94.9%)894 (88.5%) < 0.001
 ICRS 121 (2.1%)50 (5.0%)Decrease 30 (3.0%)
Equal 880 (87.2%)
Increase 99 (9.8%)
 ICRS 227 (2.7%)50 (5.0%)
 ICRS 34 (0.4%)12 (1.2%)
 ICRS 40 (0.0%)4 (0.4%)
Femoral condyles
 No injury859 (84.8%)719 (71.2%) < 0.001
 ICRS 149 (4.8%)96 (9.5%)Decrease 77 (7.6%)
Equal 701 (69.5%)
Increase 231 (22.9%)
 ICRS 274 (7.3%)121 (12.0%)
 ICRS 321 (2.1%)54 (5.3%)
 ICRS 410 (1.0%)20 (2.0%)
Trochlea
 No injury1002 (98.9%)960 (95.0%) < 0.001
 ICRS 17 (0.7%)17 (1.7%)Decrease 6 (0.6%)
Equal 954 (94.5%)
Increase 49 (4.9%)
 ICRS 24 (0.4%)19 (1.9%)
 ICRS 30 (0.0%)7 (0.7%)
 ICRS 40 (0.0%)7 (0.7%)
  1. ACL anterior cruciate ligament, ICRS international cartilage repair score
  2. aMissing data on ICRS for one patient
  3. bMissing data on ICRS for four patients
  4. cFor the comparison of decrease versus increase in cartilage injury severity