Fig. 5From: Controlled fracture of the medial wall versus structural autograft with bulk femoral head to increase cup coverage by host bone for total hip arthroplasty in osteoarthritis secondary to developmental dysplasia of the hip: a retrospective cohort studyDiagram showing the differences between the three medial protrusion techniques increasing the rate of cup coverage. a The illustration of a medial wall fracture. The blue color showed the complete internal layer of the periosteum. The red color showed the autogeneous mud-like cancellous graft and fractured medial wall. b The illustration of medial wall osteotomy. The red color showed the medially displaced bone block. c The illustration of medial wall penetration. The medial aspect of the acetabular cup beyond the Kohler’s line with a discontinuous internal layer of the periosteum colored in blue and bone lossBack to article page