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Table 1 Pre- and postoperative radiologic assessment measured using AP pelvic X-rays

From: Computer-assisted femoral head reduction osteotomies: an approach for anatomic reconstruction of severely deformed Legg-Calvé-Perthes hips. A pilot study of six patients

Radiologic value Preoperative (avg, ±) Postoperative (avg, ±) Difference (avg, ±) p-value (Wilcoxon signed rank test)
Diameter index (%) 118.2% (11.21%) 98.2% (2.28%) 20% (10.22%) 0.043
Sphericity index (%) 51.49% (10.47%) 72.96% (7.33%) 21.47% (7.21%) 0.028
Extrusion index (%) 30.77% (11.75%) − 14.02% (7.74%) 44.8% (15.9%) 0.028
LCE angle 22.33° (6.24°) 48.25° (9.65°) 25.92° (7.6°) 0.028
Tönnis angle 14.95° (6.08°) −2.98° (3.95°) 17.94° (4.59°) 0.028
Intact Shenton lines 4/6 6/6 2 0.157
CCD angle 134.03° (5.43°) 128.5° (8.05°) −5.51° (4.08°) 0.028