Firstly, hernia or lymphadenopathy. Secondly, restricted pain during impingement syndrome of the hip joint. Third, pain at the base of the left thigh occurs when aseptic necrosis of the femoral head develops on the left side of the male thigh. Fourthly, when inflammatory diseases such as septic infection, tuberculosis or synovitis develop in the male hip joint, this may lead to pain at the root of the male left thigh.