Pain behind the knee

Introduction The main pathological tissue that causes pain in the back of the knee, the pain in the posterior side of the knee (the armpit) accounts for 1/5 to 1/4 of the incidence of knee pain. The painful sensation caused by the body and the body damage. The painful response to sexual stimulation cannot be ignored.

Cause

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. Sudden knee flexion or fixation of the ankles causes the calves to suddenly reverse, which can also cause acute damage at the beginning of these muscles. Understand the characteristics of pain: the location, extent, duration of pain; factors that aggravate pain; factors that reduce pain, and other pain-related factors. It may also be related to the way you usually do activities, the amount of activity, and so on.

an examination

Related inspection

Bone joint and soft tissue CT examination, interlocking sign, Lechman test, land temperature test

The flexion resistance test of the lower leg often causes pain in the back of the knee. The pain in the posterior knee caused by the lateral head lesion of the gastrocnemius is often biased to the outside of the fossa. On the outside of the armpit, a rounded blunt ridge can be found, which is the posterior side of the femoral epicondyle. The lesion occurs in the lateral area of the gastrocnemius, and the blunt ridge can cause tenderness and tenderness. Some patients can also cause pain in the posterior side of the calf. If this tenderness occurs in the posterior superior part of the lateral epiphysis, it is caused by lesions in the diaphragm. The tenderness that occurs below the upper iliac crest is often caused by post-knee pain caused by lesions in the muscle area. Therefore, the examination of the tender point can clearly diagnose and determine the tissue in which the lesion occurs, which is conducive to targeted treatment and improve the therapeutic effect. Pain inside the armpit, often caused by lesions in the medial head of the gastrocnemius. On the inner side of the armpit, a rounded blunt bulge can also be found, which is the posterior side of the femoral condyle. In the medial head of the gastrocnemius, there is a lesion in the area, and a marked tender point can be found on the rounded bulge. Some patients can also transmit tenderness to the back of the calf.

The iliac vein is outside the radial artery, and the phrenic nerve is on the outside and shallow side of the iliac vein, and is located in the middle of the armpit. Therefore, the arrangement of the axilla from the medial to the medial is the arteries, veins, and nerves. The pain in the middle of the back of the knee is often caused by sacral neuropathy. The tender point is located in the middle of the armpit and often causes numbness to the back of the calf. Serious people affect walking and standing activities.

The name of the posterior knee pain syndrome is also vague and general. If the disease is limited to a group of soft tissue lesions, it should be named after the tissue in which the lesion occurs. If the tenderness is limited to the inner side of the gastrocnemius, it should be diagnosed as "the gastrocnemius inner head syndrome"; when the tender point is limited to the upper part of the upper femoral epiphysis, it should be diagnosed as "diaphragm pain syndrome"; When the tenderness point is confined to the lower part of the upper iliac crest, it should be diagnosed as "diaphragmatic syndrome". This diagnosis is clear, which is conducive to targeted treatment and can greatly improve the treatment effect.

Differential diagnosis

Post-knee swelling and pain, limited activity: the axillary cyst is an expansive gastrocnemius muscle, semi-membrane muscle smooth sac, which is often connected with the posterior joint capsule. It is more common in middle-aged cases and has the highest incidence. Females, which cause mechanical knee extension and knee flexion are limited, the pain is lighter, and the tension is obvious. The patient's complaint is often characterized by a gradual swelling in the litter 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.

The humeral knee pain syndrome is a specialized vocabulary that describes the pain that occurs in front of or around the tibia. Patellaofemoral Pain Syndrome, also known as anterior knee pain, is caused by abnormal movement of the femur during flexion.

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.

The flexion resistance test of the lower leg often causes pain in the back of the knee. The pain in the posterior knee caused by the lateral head lesion of the gastrocnemius is often lateral to the axillary fossa. On the outside of the armpit, a rounded blunt ridge can be found, which is the posterior side of the femoral epicondyle. The lesion occurs in the lateral area of the gastrocnemius, and the blunt ridge can cause tenderness and tenderness. Some patients can also cause pain in the posterior side of the calf. If this tenderness occurs in the posterior superior part of the lateral epiphysis, it is caused by lesions in the diaphragm. The tenderness that occurs below the upper jaw of the femoral epithelium is often caused by post-knee pain caused by lesions in the diaphragm. Therefore, the examination of the tender point can clearly diagnose and determine the tissue in which the lesion occurs, which is conducive to targeted treatment and improve the therapeutic effect. Pain inside the armpit, often caused by lesions in the medial head of the gastrocnemius. On the inner side of the armpit, a rounded blunt bulge can also be found, which is the posterior side of the femoral condyle. In the medial head of the gastrocnemius, there is a lesion in the area, and a marked tender point can be found on the rounded bulge. Some patients can also transmit tenderness to the back of the calf.

The iliac vein is outside the radial artery, and the phrenic nerve is on the outside and shallow side of the iliac vein, and is located in the middle of the armpit. Therefore, the arrangement of the axilla from the medial to the medial is the arteries, veins, and nerves. The pain in the middle of the back of the knee is often caused by sacral neuropathy. The tender point is located in the middle of the fossa, and often causes numbness to the back of the calf. Serious people affect walking and standing activities.

The name of the posterior knee pain syndrome is also vague and general. If the disease is limited to a group of soft tissue lesions, it should be named after the tissue in which the lesion occurs. If the tenderness is limited to the inner side of the gastrocnemius, it should be diagnosed as "the gastrocnemius inner head syndrome"; when the tender point is limited to the upper part of the upper femoral epiphysis, it should be diagnosed as "diaphragm pain syndrome"; When the tenderness point is confined to the lower part of the upper iliac crest, it should be diagnosed as "diaphragmatic syndrome". This diagnosis is clear, which is conducive to targeted treatment and can greatly improve the treatment effect.

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