The thigh root area, around the hip joint. The term thigh root area is often a designation used by patients when describing their condition and is not a standard clinical term. The thigh root area, when used, tends to refer to the following areas: 1. The front of the hip joint, which is the groin area. This area has the stopping point of the quadriceps muscle, as well as the hip joint below. When lesions occur in these areas, the patient will use the thigh root to describe the discomfort associated with this area. 2. The medial aspect of the hip joint, that is, near the perineal area. This area is often susceptible to strains because of the adductor muscles and tendons, which can lead to pain. Patients also refer to this area as the thigh root when describing their condition.3. It refers to the posterior aspect of the hip joint, that is, the position of the sciatic tuberosity and the posterior aspect of the hip, which is also where the posterior gluteal transverse stripe is located. Some patients experience radiating pain here due to the presence of a herniated lumbar disc, or sciatica. When describing the condition, the thigh root refers to this area.