After the vertical fork behind the thigh tendon pain is commonly caused by pulling injury, lumbar disc herniation, pear-shaped muscle syndrome and other diseases of their own can also lead to pain in the back of the thigh. For specific reasons or conditions can be taken to rest physiotherapy, drug treatment, surgical treatment and other measures. 1. Pulling injury: normal people do not often under the fork or warm up did not do, in the process of under the fork may be excessive pulling lead to local muscles, ligaments and other soft tissue injuries, thus appearing the clinical symptoms of pain in the back of the thigh. At this time, we should pay attention to rest, avoid excessive stretching again; if necessary, we can use hot compresses and other physical therapy to promote the recovery of local injuries. 2. Lumbar intervertebral disc herniation: a few people may have lumbar intervertebral disc herniation, usually no symptoms, after the line down the vertical fork will aggravate the herniation of the intervertebral discs and compression of the local nerve root, the symptoms of pain in the back of the thigh. This situation often can not be relieved after rest, need to improve the lumbar magnetic resonance examination to clarify the diagnosis, conservative treatment is ineffective need to carry out surgical treatment. 3. Piriformis syndrome: Piriformis syndrome is a common disease causing acute and chronic sciatica. Often the buttocks and thighs of the back of the pain, this situation is recommended to consult a doctor in time to clarify the diagnosis, to take physical therapy, local drug injection closed and other comprehensive treatment means. It should be noted that: after the vertical fork thigh tendon pain may also have other reasons, if the rest adjustment symptoms do not relieve or even aggravate, then you should consult a doctor in a timely manner, a clear cause of standardized treatment.