Pain in the leg with a tendon may be sciatica, which is generally manifested as pain in the area of sciatic nerve innervation, specifically pain radiating from the buttocks, the back of the thigh, and the back and outside of the calf. When the lower limb activities or lumbar activities, the symptoms may be aggravated, there are commonly the following reasons: 1, lumbar spine diseases such as lumbar disc herniation, severe osteophytes compression of the nerve caused by the general lumbar have obvious pressure pain, paravertebral pressure pain, pressure on the vertebral side of the lower limbs will have radiating pain aggravated. The nerve root compression can be seen on MRI. 2. pear-shaped muscle syndrome, caused by the sciatic nerve jamming through the pear-shaped muscle. The pain of pressure on the pear-shaped muscle, radiating pain in the lower limbs, positive pear-shaped muscle test and straight leg raising test, no obvious abnormality in imaging examination in general, ultrasound and electromyography of the hip can help confirm the diagnosis.