Swelling and pain behind the knee, limited mobility

Introduction The axillary cyst is more common in middle-aged cases than in middle-aged cases. Males are more than females, resulting in mechanical knee extension and knee flexion limitation. The pain is lighter and the tension is obvious. The patient's complaint is often characterized by a gradual swelling of the axillary area with pain in the back of the knee. Occasionally cysts can be oppressed to block venous return, causing calf edema. When the cyst grows to a certain extent, the knee flexion and extension activity is limited. When the knee joint of the affected limb is maximal, the swelling is most obvious, the tension is increased and hardened, the flexion is reduced or not seen, the tension is reduced and softened, and the axillary swelling or discomfort is more obvious after walking or standing for a long time, the knee flexes, with The hand can be pressed or pressed, or the cyst can be reduced.

Cause

Physical examination: the affected limb extends beyond the end of the examination bed. When the knee joint is maximal, the swelling is most obvious. The tension is increased and hardened. When the flexion is reduced or not seen, the tension is reduced and becomes soft. After walking or standing for a long time, the armpit acid is Swelling or discomfort is more obvious, knee flexion, pressing by hand, or continuous compression, the cyst can be reduced, which can prove that the cyst is connected to the joint cavity. At the time of palpation, it was found that there was no tenderness in the early stage, there was a sense of fluctuation, no adhesion to the skin, and the surface was smooth. Partial puncture of the armpit can extract viscous liquid. X-ray film can see a spherical soft tissue shadow in the armpit. Knee arthrography can show that the axillary cyst meets the joint cavity.

an examination

Related inspection

CT examination of bone joints and soft tissues for functional range of joints in human body

There are two types of primary and secondary cysts. The original hair comes from the joint cavity and the joint itself is normal, mostly bilateral, but not necessarily at the same time, there is a tendency to relapse after resection. The most common types of lesions that occur frequently in the joints are osteoarthrosis, rheumatoid arthritis, and intra-knee disorders associated with the meniscus, especially in relation to posterior meniscus.

Differential diagnosis

Post-knee pain syndrome refers to post-knee pain caused by lesions in the soft tissue after the knee. Frequent calf flexion and extension activities, such as swimming and kicking, tend to cause lesions at the beginning of these muscles and cause pain in the back of the knee.

The sacral anterior knee pain syndrome is a professional vocabulary that occurs in front of or around the humerus. The common cause is the damage to the tibia of the tibia. The damage of the tibia is caused by the impact force. It is called patellar ligament pain syndrome or running knee.

Pain after sputum: The general symptoms of patellofemoral articular cartilage injury, the most important is post-tarnea pain. In the active or semi-squatting position, the initial stage is acid deficiency and discomfort, and later develops into persistent or progressive soreness. Often the pain is obvious at the beginning of the activity, the activity is relieved, and the pain is aggravated at the end of the activity or at rest.

Tibial pain: In the early stage of the tibia femoral pain syndrome, the knees may experience pain when walking, going up and down the stairs, and standing up under the armpits. In severe cases, there may be sudden knees unable to force or even stand unstable during walking.

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