The weight-bearing load on joints, especially the knee and ankle joints, is crucially dependent on body weight, but also on the axis of load through the joints and joint angles. With bow legs or knock-knees, there can be considerable overloading on one side of the knee, which the cartilage cannot withstand in the long term. If the meniscus has been damaged or removed, its protective function is lost, and joint failure is inevitable.
In the case of incorrect loading, only timely, surgical straightening of the leg can stop joint destruction. Rotational deviations of the legs inwards or outwards (walking like Charlie Chaplin) can also considerably impair the gait pattern and often result in early muscle fatigue or joint pain due to an unfavorable load. Surgical corrections are almost always medically indicated, because they correct the causative problems and prevent late damage. In many cases, an artificial knee joint can be avoided or at least significantly postponed.
After maturity, correcting leg deformities always require cutting of the bone. Accurate analysis and correction planning are an indispensable prerequisite for the success of treatment. ZEM-Germany has the most modern techniques and decades of experience at its disposal. The bone is cut gently and the leg can be measured exactly during the operation. Stabilization is usually possible with an internal intramedullary nail or a plate. External fixators are rarely needed, and are only used if acute correction would threaten nerve injury.