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Table 2 Clinical and radiographic outcome measurements

From: Open reduction and internal fixation using multiple nonabsorbable suture materials in acute patella fracture: comparison of clinical and radiological outcome with tension band wiring

  Group 1 Group 2 p-Value
Ratio of patella height (injured/uninjured) 1.02 ± 0.06 1.01 ± 0.05 0.154
Insall–Salvati ratio (injured/uninjured) 0.96 ± 0.05 0.99 ± 0.05 0.252
Clinical bone union time (weeks) 6.77 ± 0.7 6.21 ± 0.8 0.421
Radiologic bone union time (weeks) 11.3 ± 1.4 10.8 ± 1.5 0.262
ROM
 FC (degrees) at 3 months 2.5 ± 2.2 2.3 ± 2.7 0.128
 FF (degrees) at 3 months 120.3 ± 9.4 110.5 ± 7.7 0.037*
 FC (degrees) at 6 months 0.8 ± 1.3 1.0 ± 1.6 0.264
 FF (degrees) at 6 months 125.5 ± 10.1 124.4 ± 9.8 0.233
 FC (degrees) at 12 months 0.5 ± 0.8 0.7 ± 0.9 0.436
 FF (degrees) at 12 months 134.2 ± 11.2 133.6 ± 10.9 0.367
HSS score
 At 3 months 78.4 ± 8.2 83.7 ± 8.7 0.032*
 At 6 months 91.3 ± 10.2 92.1 ± 10.1 0.235
 At 12 months 94.2 ± 11.2 94.3 ± 10.9 0.623
Lysholm score
 At 3 months 73.5 ± 8.1 80.4 ± 8.2 0.016*
 At 6 months 86.3 ± 9.7 86.9 ± 10.1 0.127
 At 12 months 92.3 ± 12.3 92.6 ± 10.4 0.273
  1. FC flexion contracture, FF forward flexion, HSS Hospital for Special Surgery
  2. *p- < 0.05 using an independent-sample Student’s t-test. The values are given as the mean