Complex foot deformities, correction by TSF -- Combined technique: lengthening over nail -- Hindfoot reconstruction by the combined technique -- Knee arthrodesis for the treatment of infected knee arthrodesis -- Reconstruction techniques for mega bone defects (external fixation versus titanium cages versus free vascularized fibula grefts) -- Pelvic support osteotomy for the treatment of infected total hip replacement -- Treatment of fibular hemimelia -- Treatment of congenital pseudoarthrosis of the tibia -- Treatment of proximal focal femoral deficiency -- Combined technique: Fixator assisted nailing -- Joint distraction for special conditions -- 6 axis correction of multiapical deformities -- Lengthening and then plating / nailing -- Use of external fixation for reconstruction following bone tumor treatment -- Treatment of infected periarticular nonunions -- Hindfoot reconstruction by the combined technique -- Combined technique: FAN + LON -- Reconstruction of segmentary defects in chronic osteomyelitis by the combined technique -- Reconstruction techniques for mega bone defects (external fixation versus titanium cages versus free vascularized fibula grefts) -- Treatment of severe contractures by external fixation (elbow / knee / ankle) -- External fixation for spinal deformities.