Table 1 Patient characteristics of the entire cohort (n = 90). Preoperative radiological values: varus deformity, Caton-Deschamps-Index (CDI), Blackburne-Peel-Index (BPI) and Insall-Salvati-Index (ISI)

Age at surgery (years, mean, SD, range)

46.64 ± 9.87 (18,90 – 66.90)

Sex (f: m)

31: 59

Follow up (months, mean, SD, range)

121.0 ± 28.03 (73 – 171)

BMI at surgery (kg/ m²)

27.75 ± 4.64 (12.30 – 41.30)

Symptoms prior to surgery (months)

26.68 ± 36.27 (2 – 240), median 15.0

Varus preOP (°)

6.37 ± 2.76 (0.90 – 14.10)

CDI preOP

1.04 ± 0.16 (0.66 – 1.5)

BPI preOP

0.94 ± 0.17 (0.31—1.3)

ISI preOP

0.92 ± 0.15 (0.70 – 1.40)