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Table 1 Preoperative clinical and radiological values with ranges where applicable

From: The Ali Krogius procedure for treatment of patellofemoral instability should be regarded as obsolete even in skeletally immature patients

  Total
Number
Average age Leg Alignment Trochlear Dysplasia (Dejour) Caton-deschamps ratio Patellar Tilt Kujala score
>  16 years 16 29 (17–40) 5 Valgum
9 Normal
1 Varus
5 Type A
2 Type B
1 Type C
3 Type D
1.27 (0.85–1.66) 11° (2–29) 53% (35–73%)
≤ 16 years 17 13 (6–16) 7 Valgum
7 Normal
3 Varus
7 Type A
1 Type C
3 Type D
1.30 (0.86–1.65) 10° (3–26) 57% (41–83%)