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Table 2 Comparisons between group A (re-operation) and group B (no re-operation)–demographics

From: Re-operation rate after surgical treatment of osteochondral lesions of the talus in paediatric and adolescent patients

  Group A
n = 7
Group B
n = 20
P value/test
Age (Mean ± SD) 16.3 ± 1.6 years 17.1 ± 2.4 years n.s.c
Gender (n/%)
 Male 2/28.6 8/40.0 n.s.b
 Female 5/71.4 12/60.0
BMI (Median, range) 21.7 kg/m2 (20.3–34.9 kg/m2) 23.6 kg/m2 (18.0–39.3 kg/m2) n.s.a
Lesion location
 Medial 5/71.4 12/60.0 n.s.b
 Central 0 0
 Lateral 2/28.6 8/40.0
Corresponding distal tibia lesion (n/%)
 Yes 0 1/5.0 n.s.b
 No 7/100.0 19/95.0
Growth plate distal tibia/fibula (n/%)
 Open 0 1/5.0  
 Closed 7/100.0 19/95.0  
Side (n/%)
 Right 4/57.1 9/45.0 n.s.b
 Left 3/42.9 11/55.0
Aetiology (n/%)
 Idiopathic 2/28.6 6/30.0 n.s.b
 Acute traumatic 2/28.6 5/25.0
 Chronic traumatic 3/42.9 9/45.0
BHL classification (n/%)
 1 0 2/10.0 n.s.b
 2 2/28.6 5/25.0
 3 4/57.1 10/50.0
 4 1/14.3 3/15.0
 5 0 0
ICRS classification intraoperative (n/%)
Missing data n = 2
 0 0 0 0.001b
 1 1/16.7 5/26.3  
 2 2/33.3 1/5.3  
 3 2/33.3 0  
 4 1/16.7 13/68.4  
Operative technique (n/%)
 Arthroscopy, BMS 2/25.0 6/75.0
 Arthroscopy, retrograde drilling 4/50.0 4/50.0  
 Arthroscopy, BMS + retrograde drilling 0 1/100.0
 Arthrotomy, flake fixation 0 1/100.0
 ACI + autologous bone grafting 1/11.1 8/88.9
  1. BMI body mass index, ICRS International Cartilage Repair Society, BHL Berndt-Harty-Loomer, BMS bone marrow stimulation, ACI autologous bone grafting, n.s. not significant; a Wilcoxon test; b Chi square test; c t test