Fig. 4
From: Direct anterior approach in total hip arthroplasty: more indications and advantages than we found
Specific temporal and spatial adaption observed from anteroposterior and lateral views of lumbar-pelvis X-ray in a bilateral high-dislocated DDH patient after DAA. A, D Preoperative anteroposterior pelvis X-ray demonstrated an extremely anteverted pelvis with opened inlet and closed obturator foramen (yellow arrow). The lateral X-ray of lumbar spine showed 64° of LL, 53° of SS, and 9° of PT. B, E Hip-spine adaption at the 6th month after surgery, the anteroposterior pelvis X-ray showed slightly retroverted pelvis with opened obturator foramen (yellow triangle). And the inclination and anteversion angles of the acetabular component were 45° and 11° in right hip, and 38° and 9° in left hip. The lateral X-ray of lumbar spine showed 43° of LL, 40° of SS, and 14° of PT. C, F Hip-spine adaption at the 10th month after surgery, the inclination and anteversion angles of the acetabular component transformed as 48° and 16° in the right, and 40° and 15° in the left (yellow triangle). The lateral X-ray of lumbar spine showed remodeled hip-spine complex with 42° of LL, 31° of SS, and 27° of PT. Please be noted the significant morphological change of obturator foramen (yellow arrow)