Fig. 2

AHO with or without a secondary septic arthritis. a An 11-month-old boy, who suffered from osteomyelitis concurred with septic arthritis on the left proximal femur, had received debridement combined with RBGS mixed with antibiotics. The hip was immobilized with a brace postoperatively. b Pathological subluxation was observed after 3 years postoperatively. c An innominate osteotomy and varus derotational osteotomy of the proximal femur were performed to correct residual deformities d A limb shortening of 1 cm was noted at the final follow-up. e A 9-month-old boy who suffered from osteomyelitis on the right proximal tibia. f After being debrided, bone defect was filled with RBGS, which was mixed with 0.5 g vancomycin. The affected limb was immobilized by a cast postoperatively. g The bone lesion healed after 2 months postoperatively. h,i The outcome of the involved limb was good at the final follow-up