external fixator device

At the same time as the wound treatment, the skeletal external fixator device completed the treatment of the fracture and the repair of the bone defect in the first stage, and restored the function of the affected limb to the utmost extent. Treatment of diseases: humeral shaft fractures, femoral shaft fractures, ulnar and radial fractures Indication Various limb fractures. Preoperative preparation Debridement. Surgical procedure Open fractures were thoroughly debrided, and skin flaps were transferred using local flaps. The comminuted bone piece should be reset as much as possible. The first hand traction traction reduction, the needle plane is selected outside the wound, the needle point is selected at the distal end of the fracture (about 4~5cm from the fracture line), the humerus fracture is inserted in the anterior lateral part of the calf, and the muscle layer is thicker and local at this part. Strong anti-infective ability. The borehole should be in the central axis of the backbone, and the T-shaped external fixator cross-arm drilling point should be on the vertical line of the backbone axis so that the stress can be evenly separated on the bone. Pay attention to avoid important nerves and blood vessels when entering the needle, and place the needle as much as possible on the part that does not affect the patient's postoperative limb activity. Make a 1cm skin incision with a sharp knife at the needle insertion site, bluntly separate the soft tissue to the bone surface with a vascular clamp, insert the outer cannula with a trocar, select the midpoint of the anterior and posterior border of the humerus, pull out the inner trocar, and tap the outer cannula It is fixed on the cortical bone, and the direction of the outer cannula is drilled to the opposite side through the bone cortex, screwed into the fixation screw, and passed through the contralateral cortical bone 2 to 3 mm, and the external fixator is placed. Manipulative or instrumental rectification, after fluoroscopy, after satisfactory reduction, tighten the joints of the fixator to fix the fracture. The external fixator should be about 2cm away from the skin, and the dressing at the needle entrance should be wrapped. complication Due to the special nature of the blood supply in the middle and lower part of the humerus, the soft tissue before the iliac crest is weak, and the treatment is difficult, often causing wound infection, fracture nonunion or osteomyelitis.

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