Rationale:Inflammatory pseudotumor has been commonly reported in patients undergoing total hip arthroplasty (THA).Patient concerns:We reported a patient who had a massive intra-pelvic pseudotumour and acetabular bone defect underwent two-stage revision THA.Diagnoses:A new surgical strategy for pseudotumor after THA is performed.Interventions:Thorough debridement intra-pelvic pseudotumour via Smith-Petersen approach, bone grafting on iliac medial surface and plate-screw internal fixation were performed in the first stage, followed by revision of the loosened prosthesis to a cementless primary prosthesis in the second stage.Outcomes:A follow-up for 5 years showed satisfactory recovery of function.Lessons:This surgical revision is less invasive than conventional methods, resulting in a stable and well-functioning hip joint after mid-term follow-up for 5 years.

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From Jan. 1995 to June 1996, 6 cases of traumatic defect of the tibia were treated by remodeling and reduction of fractured ends and osteotomy and distraction at the proximal metaphysics of the tibia. In 6 patients, aged 19 to 54, with the limb-length discrepancy being at least 3 to 4.5 cm, the tibia was lengthened by 3 cm in 3 cases, 4 to 4.5 cm in 3 cases. The consolidation and maturation of the bone were accomplished within 3 to 6 months. The authors believe that this procedure is simple, less invasive and involves no bone-graft.