The causes of left hip pain can be seen in the following cases: 1. it may be caused by soft tissue injury in the groin. 2. it may be caused by strain on the left hip. 3. it may also cause pain in the left hip if it is caused by a herniated disc due to accidental flashing of the back. 4. it may be caused by prolonged work and study in one position that leads to symptoms of left hip pain. 5. it may be caused by left Femoral head necrosis, resulting in symptoms of soreness in the left crotch.