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Table 3 Comparison of condylar size and morphology changes from preoperative to 1 year after surgery (T0-T2) between the USSRO and BSSRO groups

From: Comparison of condylar morphology changes and position stability following unilateral and bilateral sagittal split mandibular ramus osteotomy in patients with mandibular prognathism

T0-T2 TMJ condylar change Condylar volume change (mm3) Condylar surface size change (mm2) Average surface deviation of TMJ (mm)
Deviated side Nondeviated side Deviated side Nondeviated side Deviated side Nondeviated side
USSRO 98.3 ± 29.3 58.7 ± 9.7 80.4 ± 18.9 40.2 ± 8.3 0.25 ± 0.05 0.15 ± 0.03
BSSRO 71.6 ± 11.9 59.3 ± 8.4 51.1 ± 13.8 39.7 ± 11.0 0.14 ± 0.03 0.14 ± 0.03
P value < 0.01** 0.33 0.011* 0.09 0.001** 0.156
  1. T0: preoperative, T2: 1 year after surgery, *: P < 0.05, **: P < 0.01