Osteosynthesis is a medical procedure in which broken bones are held firmly back together using special tools such as screws, plates, wires, or nails.
How does osteosynthesis work?
When a bone breaks, it is sometimes not enough to simply keep it still, for example with a splint or a plaster cast. Especially with complicated breaks, displaced bone fragments, or fractures that would heal poorly, doctors use a procedure called osteosynthesis. The broken bone is surgically connected with metal parts so that it stays in the correct position and can grow back together as well as possible.
The materials used, usually stainless steel or titanium, keep the fracture site firm and help the bone become stable again. Depending on the type of break and the part of the body, different techniques are used. The most common methods involve placing plates, screws, nails, or wires directly on or inside the bone. The goal is to support natural healing and allow the quickest and most complete recovery of function possible.
When is osteosynthesis needed?
Not every broken bone needs an operation. Many straightforward fractures can be treated with a plaster cast or bandages. Osteosynthesis becomes necessary when the break is very unstable, when the ends of the bone are far apart, or when there are several bone fragments. It is also often the best choice for open fractures, where the bone is visible through the skin, or for fractures near a joint.
Osteosynthesis is frequently used for breaks of the thigh, lower leg, upper arm, or pelvis. It can sometimes also be the right choice for children, if the growth of the bone would otherwise be affected.
What happens during an osteosynthesis operation?
The operation is usually carried out under general anaesthetic or a regional anaesthetic, depending on where the break is and the patient's general health. First, the fracture site is exposed and the bone fragments are carefully moved into exactly the right position. The surgical team then fixes the fragments in place using the appropriate materials. These might be plates fastened to the bone with screws, intramedullary nails inserted into the bone canal, or wires that hold the pieces together.
After the procedure, the wound is closed and often protected with a dressing or a splint. In some cases, a short stay in hospital is needed to monitor the first few days after the operation and to spot any complications early.
What does osteosynthesis mean for everyday life?
Directly after the operation, the affected area is usually still sensitive. Many people feel pain or reduced movement at first. Thanks to the stable fixation provided by the implanted material, it is often possible to begin gentle movement or physiotherapy earlier than with a plaster cast alone.
How quickly the bone can bear full weight again depends on the type of fracture, the material used, and how healing progresses. Doctors give precise instructions about this. In many cases, a gradual increase in load is planned to support the healing process as well as possible. The metal parts sometimes remain in the body permanently, but are often removed after several months or years in a further, smaller operation, especially in younger people or if they cause discomfort.
Common concerns about osteosynthesis
Many people wonder whether the metal inside the body might cause problems. Modern materials such as titanium or stainless steel are very well tolerated and do not usually trigger allergies or rejection reactions. In everyday life, the metal is usually not noticeable, and in most cases full movement returns after healing.
Some people worry about possible complications. As with any operation, infections, wound healing problems, or loosening of the materials can occur. These risks are rare, however, and are discussed thoroughly with the treatment team beforehand. Regular check-ups help to monitor the healing process and to respond early if needed.
What happens after osteosynthesis?
After the operation, patience is important. The bone needs time to grow back together fully. Physiotherapy and targeted movement support healing and help to strengthen the muscles. Most people are able to return to their usual activities after a few weeks or months. The treatment team decides individually when sport or physical activity is possible again.
The implanted material is sometimes left in the body if it causes no problems or if removal would carry risks. In other cases, it is removed once healing is complete, particularly in young people or when the metal causes discomfort.
Osteosynthesis is today a well-established and safe procedure that leads to good healing and restoration of function in most cases. Modern techniques and experienced teams mean that even complicated fractures can be treated as well as possible.
