https://hilfebeiischiasschmerzen.com | Ischias occurs on account of the compression at the base of the backbone. This Compression contributes at the lower back and gluteal area of the body. This annoyance travels to foot, calf, thighs and knee. Ischias occurs when the pain reaches the knees and the ankles. Ischias is the pain which moves throughout the ischiasnerv - the longest nerve in your system.