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Table 1 Demographics of patients with a PMF fragment size ≥15%

From: Comparison of the efficacy of posterior-anterior screws, anterior-posterior screws and a posterior-anterior plate in the fixation of posterior malleolar fractures with a fragment size of ≥ 15 and < 15%

  Posterior-anterior (PA) screw (n = 48) Anterior-posterior (AP) screw (n = 42) Posterior plate (n = 46) χ2/F P
Sex
 Male 25 20 21 0.409 0.815
 Female 23 22 25   
Lange-Hansen classification
 Supination external rotation 26 19 20 1.235 0.539
 Pronation-external rotation 22 23 26   
Mechanisms of injury
 Low-energy 22 22 24 0.516 0.773
 High-energy 26 20 22   
Age (Year) 46.6 ± 12.3 44.2 ± 14.1 42.1 ± 11.9 1.478 0.232
Time from injury to surgery (Day) 6.8 [6.0,8.7] 6.6 [5.8,8.4] 7.1 [5.6,8.1] 0.703 0.704
Follow-up time (Month) 18.2 [14.5,23.6] 17.7 [14.4,22.3] 17.1 [14.5,19.8] 0.856 0.652