From: Modified triple pelvic osteotomy for adult symptomatic acetabular dysplasia: clinical and radiographic results at midterm follow-up
Tönnis grade
Before operation, n (%)
Last follow-up, n (%)
Group T0
12 (42.86)
13 (46.43)
Group T1
10 (35.71)
8 (28.57)
Group T2
6 (21.43)
7 (25.00)