CareFix extended intramedullary needle

2. Measure the diameter of the bone marrow cavity;

Position the osteotomy point, namely the CORA point, predict the body surface position of the osteotomy point, place markers, and C-back machine perspective.

With the positioning point as the center, make a small 2-3cm incision from the outside, incite the skin, fascia, and muscle layer by layer, peel off the periosteum, and bone cutter

Choose a hollow drill bit 0.2-0.3mm larger than the required female needle, insert the guide needle, and expand the schizophrenia from the osteotomy to the proximal or distal end. The proximal schizophrenia can penetrate from the inner side of the large trochanter apex, at the proximal end Find the needle point and cut open the soft tissue such as the proximal skin

After the marrow expansion, the guide needle is removed, and then the proximal bone segment is inserted retrogradely from the osteotomy end, and the hollow starter is inserted in the core needle.

The core needle is implanted into the distal epiphyseal, and the C-arm is perceptually positive and lateral: the thread part of the core needle is implanted into the distal epiphyseal, not exceeding the articular surface, and is in the center of the positive and lateral position.

Push the core needle from the tail (to prevent the core needle from being taken out), pull out the hollow driver, insert the female needle in the direction of the core needle, and screw the threaded part of the female needle into the bone.

Keep the core needle at the tail 5-10mm higher than the female needle (reserve growth space), cut off the excess core needle

The probe probes the tail of the core needle to ensure smoothness of the tail and does not affect the relative sliding of the core needle and the female needle during bone growth.