Third Transverse Syndrome is generally referred to as Transverse Syndrome of the Third Lumbar Vertebra, and its symptoms include radiating pain in the lower back and legs, transverse process tenderness, and impaired functional mobility. The third lumbar vertebra is the spine with the greatest mobility during lumbar movement and has the longest transverse process. Therefore, the tip of this transverse process is prone to injury when subjected to external forces, resulting in third lumbar transverse process syndrome. 1. Radiating pain in the lumbar region and legs: In third lumbar transverse process syndrome, pain in the lumbar region may occur, and the pain may radiate to the buttocks and legs. 2. Transverse process pain: when pressing the tip of the transverse process of the third lumbar vertebra, there may be obvious pain, local lumbar muscle tension or even spasm. Pressing the tip of transverse process may also stimulate the lumbar nerves and cause radiating pain to the thigh and knee joints. 3. Functional activity disorder: due to the pain symptoms, it may lead to the limitation of lumbar activities, no pain symptoms in the lumbar region when leaning back, but when bending to the opposite side of the affected area, there may be obvious pain, which leads to the limitation of activities. When the above symptoms occur, it is recommended to consult a doctor in time to receive appropriate treatment after a clear diagnosis, so as not to delay the condition.