The indications of bone lengthening external fixation surgery are bone defect or limb length discrepancy caused by congenital malformation, trauma, tumor, infection, etc., bone defect after osteomyelitis treatment, and limb deformity caused by disease.

Advantages

It has a good therapeutic effect on bone defect and three-segment fracture, and the extension distance can reach 4cm. It can be used to treat bone defect and correction. The frame is consistent with the long axis of the diaphysis, which can be controlled by dynamic design and micro-movement to promote fracture healing. The design of pin to coupling can make the bracket itself as a template, which is convenient for screw insertion. The bone screw is designed with conical thread, the tighter the screw is, and the fixation is reliable.

Matching bone screws and instrument

Type A, B and C are all equipped with 6mm hex wrench and 6mm screw driver, the length is 250/300/350mm.Type A is equipped with 6pcs φ6*150mm bone screws, and φ5mm bone screws are also optional.Type B is equipped with 4pcs φ6*150mm bone screws, and φ5mm bone screws are also optional.Type C is equipped with 6pcs φ6*150mm and 2pcs HBφ6*150mm bone screws.The children's model is equipped with 6pcs φ4*120mm bone screws,5mm hex wrench and 4mm screw driver.

Medical tips

Bone lengthening is a orthopedic medical technique, in which an external fixator is placed on the far and near ends of the fracture, and then the special device on the top is used to continuously and traction slowly to the two ends. The space generated by the extension will be generated through the natural reconstruction function of the human body and new bone will be generated using this human bone formation ability. The lengthening surgery was divided into four stages. In the first stage, osteotomy was performed and the bone lengthening device was placed. In the second stage, the bone segments on both sides of the osteotomy line were fixed with the extender. The third stage was distraction phase (extension phase), which was distraction at a certain speed and frequency. The fourth stage was the fixation stage, when new bone formed in the distraction gap. After it matured and gained sufficient strength, the distractor could be removed.