​Knee joints are stiff and the legs can't bend

For example, diseases such as knee arthritis, if not treated properly, often cause adverse reactions in the knee joint. Adverse reactions often manifest as stiff knee joints and inability to bend the legs. At this time, the patient's daily activities will be restricted to a certain extent. In addition, there are many other reasons that can cause knee stiffness and inability to bend the legs. Let’s take a look at them now.

Post-traumatic knee stiffness and knee stiffness after joint replacement and cruciate ligament reconstruction are the most common causes of joint stiffness. Many patients experience good results at the beginning of rehabilitation training. However, after a day of training, my knee joint rebounded severely when I woke up the next morning. Some patients show rapid improvement in flexion and extension angles during the first 3-4 weeks of training, but after three weeks the flexion and extension angles are worse than before. It's very distressing. Why is this happening? The main reasons are as follows.

For one, there are many muscles, ligaments, and bursae surrounding the knee joint. These are all soft tissues. Tissue has both viscous and elastic properties. Tissues tend to retract after being pulled and stretched. After a day of rehabilitation training, the stretching of the tissue increased the flexion angle of the joint, but after a night of rest, the elastic tissue contracted, so the flexion angle decreased the next day. But after long-term training, the tissues undergo plastic deformation, and a lasting and satisfactory flexion angle can be obtained.

Second, in the early period after injury or within 3-4 weeks after surgery. Rehabilitation training of the knee joint increases the flexion angle of the knee joint and has a very good effect. But after 3-4 weeks, fibrous scar tissue in the soft tissue proliferates massively. Fibrous tissue also begins to form within the wound. The elasticity of fibrous tissue is very poor. At this time, the patient will feel a decrease in the flexion angle, and the effect of rehabilitation training will be poor. Patients often feel discouraged. But at this time you must realize that you must strictly and scientifically persist in training. Fibrous scar tissue can also be stretched apart. Thereby achieving good rehabilitation effect.

Third, some irregular rehabilitation training can cause tissue tearing. This aggravates tissue adhesion and causes a decrease in flexion range of motion. The patient's pain worsens, making him less willing to train, resulting in poor results of rehabilitation training.

Fourth, reconstruction of the sliding movement around the knee joint takes about a year. Within one year, the flexion range of motion of the knee joint may rebound. Therefore, rehabilitation training requires persistence, science, and systematization, and you should not rush for quick results. Otherwise it will backfire and only create bigger problems.