Variable | Non revision group | Revision group | t/z/χ2 | P |
---|---|---|---|---|
Number | 136 | 16 | – | – |
Gender (male/female) | 28/108 | 4/12 | 0.168 | 0.682* |
Age (years) | 61.6 ± 14.7 | 69.0 ± 10.0 | − 2.645 | 0.014¥ |
DM (yes/no) | 36/100 | 6/10 | 0.871 | 0.351£ |
Tobacco/alcohol (yes/no) | 8/128 | 2/14 | – | 0.284* |
Steroid usage | 6/130 | 0/16 | – | 0.507* |
BMI | 25.4 ± 3.8 | 27.3 ± 2.1 | − 3.005 | 0.006¥ |
Reason of injury (high/low energy) | 80/56 | 10/6 | 0.080 | 0.777£ |
Open/closed | 12/124 | 0/16 | – | 0.366* |
Fracture type (A2/A3/C1/C2/PF) | 24/42/10/42/18 | 0/10/0/2/4 | 11.223 | 0.024£ |
Supracondylar involved (no/yes) | 70/66 | 4/12 | 4.015 | 0.045£ |
Incision (lateral/lateral + medial) | 106/30 | 8/8 | 5.961 | 0.015£ |
Duration of operation (minutes) | 144.2 ± 45.9 | 163.4 ± 55.0 | − 1.550 | 0.123¥ |
Quality of reduction (good/bad) | 96/40 | 5/11 | 9.937 | 0.002£ |
R1 | 3.17 ± 1.43 | 2.54 ± 0.67 | 2.997 | 0.005¥ |
R2 | 3.31 ± 1.32 | 2.45 ± 0.72 | 3.970 | 0.000¥ |
R3 | 0.35 ± 0.29 | 0.19 ± 0.18 | 2.094 | 0.038¥ |
Density of supracondylar screws | 0.59 ± 0.15 | 0.65 ± 0.18 | − 1.590 | 0.114# |