Page 102 - Reconstructive Techniques in Musculoskeletal Tumor Surgery

Chapter 5
were speci ed in terms of frequencies and percentages (table 1). All data were complete except for time to full weight-bearing, for which there were missing data in 29 (37%) of the 78 patients in the lower-extremity reconstruction group.
Figures 4A-C. Radiographs of a sixty-nine-year-old man who underwent resection of an adamantinoma in the tibia and implantation of an allograft. (4A) A lateral radiograph made one day after implantation of the allograft. An intramedullary nail was used to xate this 15-cm-long allograft. Osteotomy lines can be easily identi ed. (4B) A radiograph made thirteen months after implantation of the allograft. There is persistent pseudarthrosis of the distal allograft-host junction. Cancellous bone grafting and plate osteosynthesis were performed at the distal junction. (4C) An anteroposterior radiograph made thirty-eight months after the initial operation. Satisfactory consolidation was still not seen at the distal osteotomy site. Four months later, the intramedullary nail was removed and a vascularized bular transposition was performed.
Nominal variables were compared between groups with use of chi-square tests, and continuous variables were compared between groups with use of Mann-Whitney tests. Logistic regression analysis was performed for nominal or categorical values in case of (a trend toward) signi cance. Cox regression analysis was performed for in uence on time to failure. Kaplan-Meier curves were used to analyze time to complications. Outcomes are expressed in odds ratios (ORs), hazard ratios (HRs), 95% con dence intervals (95% CI), and p-values (signi cance was set at p < 0.05).
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