Fig. 6
From: Anterior dislocation of THA after Iliopsoas tenotomy in spinopelvic imbalance: a rare case report
Standing anteroposterior (AP) and lateral radiography of the lumbar spine. The fifth lumbar vertebra is sacralized. On AP view, the obturator foramen of the pelvis is larger than that of a normal pelvis. On lateral views, multiple spondylolistheses of the third, fourth, and fifth lumbar vertebrae are observed, and the sacral slope is decreased due to posterior rotation of the sacrum and pelvis