Abstract
This paper describes the design, development and early surgical experience with a stereotactic device to allow closed retrieval and interchange of intramedullary rods in children with osteogenesis imperfecta. This relatively atraumatic procedure may allow more frequent rod interchange than with other techniques, lessening the likelihood of deformity and fracture in the unsupported skeleton when the bone has outgrown the intramedullary rod. The procedure was developed by design studies in vitro followed by intramedullary rodding of tibiae of New Zealand white rabbits. It has been used in children 12 times, in six tibiae and six femora: 11 rods have been successfully retrieved, with rod interchange in eight of these cases.
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