The healing of bone and cartilage.

摘要: Transplantation of bone should be preceded by careful assessment the recipient site. The function transplanted as an interposition graft, onlay or in restoration construction a missing part skeleton must considered. Cortical provides superior mechanical strength and can incorporated with plate fixation to span defects. Membranous used grafts for augmentation craniofacial skeletal contour has been shown endochondral maintaining volume. use rigid secure may eliminate differences resorption seen membranous versus bone. vascularity quality soft tissue at site necessitate vascularized composite free transfer. calvarium is most popular donor procedures. This undergoes less revascularizes faster than Cranial excellent due its large cortical component. calvarial causes discomfort patient compared rib iliac crest, scar well hidden. Harvesting shaping cranial require special expertise, there potential morbidity. In cartilage transplantation, surgeon take into account properties viscoelasticity, intrinsic balanced system forces, immunologic privilege. Cartilage deformed external force will tend return original shape unless deformation maintained several months. Surgical carving produces changes balance tensile expansile causing distortion shape. Distortion minimized cross-section. Carved indications rhinoplasty. Autogenous framework choice ear construction. Composite incorporating have successfully eyelid reconstruction. Fresh autogenous preferable preserved allogeneic sources, latter undergo eventual because are no viable chondrocytes maintain matrix.