Report after knee replacement surgery, patients sometimes feel a click or click during certain activities or at a specific point or points during their gait cycle. In most cases, this disorder is probably benign and not associated with pain or other negative consequences.
What causes this clicking?
To answer this question, it is useful to understand a little 'nature of the knee. In knee replacement, the ends ofthe bones that make up the knee joint is "lifted" with metal and plastic components. The surgeon uses special instruments and surgical technique suitable for implantation, the bones and the bones align with each other.
This alignment is not easy, because my knee replaced, forced as in the normal knee, the bones are not "mechanically interconnected", but the joint through the remaining soft tissues (tendons, muscles / tendons) and complianceof the implant components. During the knee replacement operation, the surgeon works to optimize range of motion and joint stability through proper alignment and sizing of the implant.
The resulting tension in the replaced joint can, therefore, vary slightly from patient to patient and can be different within the range of motion of a single patient. That is, some patients may have "tighter" knees or "looser" knees or a single knee can be "tight" in flexion, but "loose" in extension and vice versa, but in general, some degree of laxity is desirable to allow for adequate motion.
Because there is almost always some laxity in a replaced knee, clicking can sometimes be heard as a result of contact between the metal and plastic components during activity. Often it is heard during a transition from low or non-weight bearing to weight bearing. For example, a patient may hear the click while walking as the leg comes out of swing phase and makes contact at heal strike. For the most part, the clicking is usually not associated with any adverse conditions.
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