To compare the skeletal stability of rigid versus semirigid fixation for advancement genioplasty by the assessment of vertical and horizontal measurements preoperatively and post-operatively on lateral cephalometric radiographs. The study comprised of patients who underwent standard advancement genioplasty by inferior osteotomy of the chin with broadest musculoperiosteal pedicle with either rigid fixation or wire fixation. The displacements of vertical and horizontal measurements resulting following surgery was derived by calculating the difference between preoperative, immediate post-operative and 1 year post-operatively on lateral cephalometric radiographs. Preoperative measurements were marked as T1, immediate post-operative as T2, 1 year follow up post-operative as T3. In the semirigid group a mean horizontal advancement of 5.97 mm was accompanied by a relapse of 1.623 mm during a period of minimum 1 year. The mean superior repositioning of menton was 0.7 mm. This was accompanied by a relapse of 0.325 mm during a period of 1 year. In the rigid group a mean horizontal advancement of 4.815 mm was accompanied by a relapse of 0.2 mm during a period of 1 year. The mean superior repositioning of menton was 0.975 mm. This was accompanied by a relapse of 0.1 mm during a period of 1 year. This study confirms the findings of several previous studies that contribute data specific towards the use of rigid fixation in advancement genioplasty. In our study we also observed that, in cases where large advancements are necessary, wire fixation may offer insufficient means of fixation particularly if the movement is complex and asymmetrical, in which case rigid fixation devices are more helpful.

BACKGROUND & OBJECTIVES: Infected non-union of tibia per se is a challenge to treat. Subcutaneous bone causes susceptibility to compartment syndrome, non-responsive infection, non-union, fibrosis, sinuses, deformities, shortening and various other sets of problems which are associated with it. Ilizarov External fixation provides correction of all the complications associated with non-union, bone gap, infection, shortening, and deformities. Objective of this study is to assess the efficacy and safety of Ilizarov fixator method of treatment in infected nonunion tibia and to study various complications associated with Ilizarov external fixation. MATERIALS AND METHODS: 23 patients admitted and treated in Government General Hospital under the Department of Orthopaedics during the period of May 2010 to December 2012 were included in the study. Results were evaluated according to ASAMI criteria. 1 RESULTS: 59% patients had excellent bony results, 27.3% had good bony results, 9.1% had fair bony results, 4.6% had poor bony results. 68.1% had excellent functional results, 9.1% had good functional results, 9.1% had fair functional results, 13.7% had poor functional results. CONCLUSION: Ilizarov external fixator system is the best device and best solution for infected non-union tibia management.