Orthopedics focuses on the musculoskeletal system. Learn about the diagnosis, treatment, and rehabilitation of bone, joint, ligament, and muscle conditions.
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Once the plan is set, the treatment phase begins. Deformity correction is a spectrum. On one end, you have “acute” correction, where the bone is fixed in a single surgery. On the other end, you have “gradual” correction, where the bone is adjusted slowly over weeks using an external frame. The choice depends on the safety of your nerves and blood vessels and the amount of bone that needs to be generated.
This section details the surgical procedures. We will explain exactly what happens in the operating room, the difference between internal plates and external frames, and the newer technology of magnetic lengthening nails. We also cover the immediate recovery period—managing pain, caring for incisions, and the timeline for bone healing. Knowing what to expect helps reduce anxiety about the “hardware” involved.
The foundation of almost all deformity correction is the osteotomy. This is a surgical cut through the bone. It sounds drastic, but it is a controlled fracture performed with high-precision saws or drills. The surgeon cuts the bone at the specific angle determined during planning.
Once cut, the bone is essentially broken, but in a way that allows it to be moved. The surgeon then manually shifts the bone fragments into the new, straight alignment. If the bone needs to be lengthened, they don’t separate the pieces immediately; they leave them touching to start the healing process before slowly pulling them apart later. The “break” is clean, protecting the surrounding soft tissue, which is vital for quick healing.
If the deformity is mild to moderate and doesn’t require much lengthening, acute correction is standard. After the osteotomy is performed and the bone is straightened, the surgeon inserts internal hardware to hold it rigid.
The procedure might be a metal plate screwed onto the surface of the bone or a titanium rod (nail) inserted down the hollow center of the bone. This is similar to fixing a broken leg. The hardware stays inside the body. The advantage is that there is no bulky frame on the outside of the leg. The patient wakes up with the limb straight. However, there is a limit to how much a bone can be safely stretched or untwisted all at once without hurting the nerves.
For severe deformities, or when the leg needs to be lengthened by more than a centimeter or two, gradual correction is safer. This uses an external fixator—a scaffold built around the leg. Metal pins go through the skin and into the bone above and below the cut. These pins connect to rings or bars on the outside.
After surgery, there is a waiting period of 5-7 days called the “latency phase.” Then, the “distraction phase” begins. The patient turns a specific strut or nut on the frame, typically 1 mm per day. This slowly pulls the bone segments apart. New bone forms in the gap. It also gently stretches the muscles, nerves, and skin, preventing damage.
Named after the Russian doctor who invented it, this method uses circular rings connected by threaded rods. It is incredibly versatile. It can fix angulation, rotation, and length all at once. The wire pins are under tension, like bicycle spokes, making the frame very stable and allowing the patient to walk on the leg while it heals.
These are modern, computer-assisted versions of the Ilizarov frame. They use six adjustable struts (like a flight simulator base). The surgeon inputs the deformity numbers into a computer program, which generates a daily “prescription” for the patient. The patient simply adjusts the struts according to the schedule, and the frame slowly untwists and straightens the leg with mathematical precision.
The latest technology blends the benefits of gradual distraction and internal hardware convenience. These are internal lengthening nails. A telescopic rod is inserted inside the bone like a standard fracture nail. However, this rod has a small magnetic motor inside.
The patient uses an external remote controller (ERC) placed on the skin over the magnet three times a day. The magnet spins the motor inside the nail, causing the rod to telescope and lengthen the bone. There are no pins through the skin, no external frame, and less risk of infection. is becoming the gold standard for limb lengthening, though it cannot fix all types of complex deformities.
In growing children, we can correct deformities without cutting the bone at all. This is called “guided growth” or hemiepiphysiodesis. It works by tethering one side of a growth plate.
If a child has knock-knees, the doctor places a small metal plate (an eight-plate) on the inside of the knee growth plate. This stops the inside from growing, while the outside keeps growing. As the child grows, the leg naturally straightens itself over months. Once straight, the plate is removed, and growth continues normally.
These look like a figure eight. They are held in by two small screws. The surgery is minor, often taking less than an hour, and the child can walk immediately. It is a temporary “brake” on one side of the growth plate.
This is a more permanent stoppage. If one leg is too long, the surgeon can drill into the growth plate of the long leg to stop it from growing entirely. The procedure allows the short leg to catch up. It requires precise timing to ensure the legs end up equal at skeletal maturity.
Pain management is a priority. After surgery, nerve blocks and medications help control pain. For gradual correction, the daily adjustments are rarely painful, but the stretching of muscles can cause aching or stiffness. Physical therapy is crucial to keep muscles loose.
Complications can include pin site infections (for external frames), where the skin around the pin turns red. This phenomenon is treated with cleaning and oral antibiotics. In rare cases, the bone might heal too fast (premature consolidation) or too slow (delayed union). Close monitoring with X-rays allows the doctor to adjust the speed of correction to these issues.
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The frame itself doesn’t hurt, but it is heavy and awkward. Bumping it against the other leg can be painful. Most patients get used to it quickly and can walk with it.
You will be taught a daily cleaning routine, usually using saline solution and cotton swabs to remove crusts and keep the skin around the pins calm to prevent infection.
Yes, usually after the initial incisions have healed (about 2 weeks). You may need to cover the frame or simply rinse it thoroughly and dry it well afterwards, depending on your surgeon’s protocol.
Yes, the large amount of metal will trigger detectors. You will be given an implant card to show security agents. You cannot have an MRI while the magnetic nail is in place.
External frames are removed once the bone is fully firm (consolidated), usually months later. Internal plates or nails are often left in forever unless they cause irritation, but in children, they are usually removed once growth is finished.
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