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Table 2 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 = 41) Anterior-posterior (AP) screw (n = 31) Posterior plate (n = 35) χ2/F P
Sex
 Male 21 17 16 0.563 0.755
 Female 20 14 19   
Lange-Hansen classification
 Supination external rotation 22 13 17 0.971 0.615
 Pronation-external rotation 19 18 18   
Mechanisms of injury
 Low-energy 19 14 18 0.305 0.858
 High-energy 22 17 17   
Age (Year) 43.8 ± 11.8 45.8 ± 13.4 43.2 ± 11.9 0.382 0.683
Time from injury to surgery (Day) 8.6 [7.6,11.4] 8.8 [8.0,10.0] 8.5 [8.0,9.8] 0.412 0.814
Follow-up time (Month) 17.5 [13.9,24.2] 17.7 [15.1,20.9] 17.9 [13.9,22.7] 0.315 0.854