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Sciatica may also occur during pregnancy, especially during later stages, as a result of the weight of the fetus pressing on the sciatic nerve during sitting or during leg spasms. [15] While most cases do not directly harm the woman or the fetus, indirect harm may come from the numbing effect on the legs, which can cause loss of balance and falls.
The sciatic nerve supplies sensation to the skin of the foot, as well as the entire lower leg (except for its inner side). Sensation to skin to the sole of the foot is provided by the tibial nerve, and the lower leg and upper surface of the foot via the common fibular nerve. [2]: 422–4 The sciatic nerve also innervates muscles.
Piriformis syndrome occurs when the piriformis irritates the sciatic nerve, which comes into the gluteal region beneath the muscle, causing pain in the buttocks and referred pain along the sciatic nerve. [8] This referred pain is known as sciatica. Seventeen percent of the population has their sciatic nerve coursing through the piriformis muscle.
Sciatica is when the sciatic nerve — which runs down the back of the leg — is pinched or pressured. It often results in shooting pain, numbness, and tingling that can reach the foot ...
Sciatica is a condition characterized by deep pain occurs in the back and/or legs. It is the result of a compressed sciatic nerve, which runs from the lower back to just below the knee.
Distribution of the areas of the sensory roots upon the surface of the body. Structure of the nervous system; Development of the nervous system; The spinal cord or medulla spinalis
The sciatic nerve is highly mobile in the deep gluteal space with hip and even knee movements. [7] For example, hip flexion with knee extension (also called a straight leg raise) causes the sciatic nerve in the deep gluteal space to move 28mm towards the center of the body. [14] Hip movements may also create dynamic impingement between muscles.
The largest nerve of the human body, the sciatic nerve, is the main branch that gives rami to the motor innervation of the muscles of the thigh, the leg, and the foot. Common peroneal nerve and its branches innervate some parts of the skin of the foot, the peroneal muscles of the leg, and the dorsal muscles of the foot.
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